Audio-digital processing system for demultiplexing stereophonic/quadriphonic input audio signals into 4-to-72 output audio signals

• US 4,251,688 A
• Filed: 01/15/1979
• Issued: 02/17/1981
• Est. Priority Date: 01/15/1979
• Status: Expired due to Term

• Current Assignee: Ana Maria Furner
• Original Assignee: Ana Maria Furner
• Inventors: Furner, John A.
• Primary Examiner(s): Olms, Douglas W.
• Application Number:
  US06/003,733
• Time in Patent Office: 764 Days
• Field of Search: 179/1 GQ, 179/1 G, 179/1 GP, 179/100.4 ST, 179/100.1 TD
• US Class Current: 381/18
• CPC Class Codes: H04S 3/00 Systems employing more than two channels, e.g. quadraphonic H04S5/00, H04S7/00 take precedence
• CPC Class Codes: H04S 5/005 of the pseudo five- or more-channel type, e.g. virtual surround
• CPC Class Codes: H04S 5/02 of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals

Abstract

An audio-digital processing system for processing and converting audio localization data from stereophonic or quadriphonic input audio signals into digital localization data. Said digital localization data is further processed into digital commutation data which demultiplexes said stereophonic or quadriphonic input audio signals into 4 . . . 16 . . . 72 output audio signals.

This system includes an Input Audio Processor and a Psychoacoustic Data Converter that process and convert each audio field of audio localization data into digital localization data, comprising: digital phase-angle differential, phasor differential, and amplitude differential data; digital field activity, threshold, and dropout data; and digital peak-amplitude strobes. Each type of digital localization data is updated in a corresponding memory for each change in the associated audio localization data. Each corresponding memory is enabled, inhibited, or cleared by respective digital threshold and/or dropout data which are responsive to predetermined audio signal-to-noise amplitude relationships.

This system also includes a Psychoacoustic Data Processor that processes each type of updated digital localization data into digital commutation data (a digital psychoacoustic process analogous to binaural fusion). This digital psychoacoustic process functions to: execute and priority evaluate demultiplexing decisions for each output audio field; restore the reproduced sound to near infinite separation; resolve monophonic, stereophonic, and quadriphonic directional ambiguities; and provide preselectable quadrifield operations that create permutations of listening experiences previously unobtainable from the same recording. These preselectable quadrifield operations function to create 16 selectable listening formats that interchange the original panpotted musical instrument/voice positions to other predetermined transducer positions; sequentially reposition, or continuously swirl the discrete sound images in the 360-degree quadrifield; and preselect 4 . . . 16 . . . 72 output audio channels to match the number of transducers configured by the listener.

This system further includes an Output Audio Processor that processes said stereophonic or quadriphonic input audio signals into output audio signals. The output audio signals are processed in accordance with the preselectable quadrifield operations into one or more of the following: discrete direct audio signals, a system bass signal that automatically tracks the Fletcher-Munson equal loudness contours, recovered/synthesized concert hall ambience signals, rear matrix encoded audio signals, recovered direct audio signals when rear matrix encoded audio signals predominate, and recovered rear matrix encoded audio signals when discrete direct audio signals predominate.

This system includes a Psychoacoustic Audio Demultiplexer that demultiplexes, in response to said digital commutation data, said output audio signals into 4, 5, 6, 8, 10, 12, 14, 16 . . . 72 preselected output audio channels and associated configuration of transducers. The demultiplexed and point-source reproduced discrete sound images establish a 360-degree walkthrough quadrifield that eliminates the stereophonic/qaudriphonic seat; a consumer problem initiated in 1924 and defying practical solution since the first commercial stereophonic tape recording in 1954 or disc recording in 1958.

Claims

1. An analog-digital processing system for processing and converting analog waveform differential data from two analog signals into digital waveform differential data and for processing said digital waveform differential data into digital processed data, comprising:

a. input analog signal processor means processing said two analog signals into a plurality of conditioned analog signals having predetermined amplitude and bandwidth characteristics prepared for analog-to-digital conversion of said analog waveform differential data;

b. analog-to-digital converter means processing and converting said analog waveform differential data from any two conditioned analog signals paired from said plurality of conditioned analog signals into digital waveform differential data including, in combination to predetermined analog waveform differential data, digital phase-angle differential data, digital phasor differential data, digital amplitude differential data, digital peak amplitude strobes, and digital signal-to-noise data; and

c. digital data processor means processing said digital waveform differential data into digital processed data.

2. The system as claimed in claim 1 wherein said analog-to-digital converter means includes phase-angle differential converter means processing and converting predetermined analog phase-angle differential data, composed of a plurality of zero-amplitude-cross-over coincident and anti-coincident signals of two conditioned analog signals of said plurality of conditioned analog signals, into digital phase-angle differential data.

3. The system as claimed in claim 1 wherein said analog-to-digital converter means further includes peak amplitude converter means processing and converting predetermined analog amplitude peaks of each conditioned analog signal of said plurality of conditioned analog signals into digital peak amplitude strobes.

4. The system as claimed in claim 1 wherein said analog-to-digital converter means further includes phasor differential converter means processing and converting, responsive to said digital peak amplitude strobes, predetermined analog phasor differential data composed of a plurality of algebraic difference signals whose amplitudes are indirectly proportional to the common-mode of two conditioned analog signals of said plurality of conditioned analog signals, into digital phasor differential data.

5. The system as claimed in claim 1 wherein said analog-to-digital converter means further includes amplitude differential converter means processing and converting, responsive to said digital peak amplitude strobes, predetermined analog amplitude differential data composed of a plurality of amplitude ratio signals of two conditioned analog signals of said plurality of conditioned analog signals, into digital amplitude differential (amplitude ratio) data.

6. The system as claimed in claim 1 wherein said analog-to-digital converter means further includes signal-to-noise converter means processing and converting predetermined analog signal-to-noise data, composed of a plurality of predetermined reference signals whose amplitudes are indirectly proportional to the amplitudes of said plurality of conditioned analog signals, into digital signal-to-noise data.

7. An analog-digital processing system for processing and converting analog waveform differential data from two analog signals into digital waveform differential data, for processing said digital waveform differential data into digital commutation data, and for demultiplexing one or more signals (by definition, applies to analog or digital signals) into a plurality of output signals as commutated by said digital commutation data, comprising:

a. input analog signal processor means processing said two analog signals into a plurality of conditioned analog signals having predetermined amplitude and bandwidth characteristics prepared for analog-to-digital conversion of said analog waveform differential data;

b. analog-to-digital converter means processing and converting analog waveform differential data from two predetermined conditioned analog signals paired from said plurality of conditioned analog signals into digital waveform differential data including, in combination to predetermined analog waveform differential data, digital phase-angle differential data, digital peak amplitude strobes, digital phasor differential data, digital amplitude differential data, and digital signal-to-noise data;

c. digital data processor means processing said digital waveform differential data into digital commutation data; and

d. output demultiplexer means demultiplexing one or more signals into a plurality of output signals as commutated by said digital commutation data.

8. The system as claimed in claim 7 further comprising a plurality of power amplifiers and associated transducers, respectively amplifying and reproducing said plurality of output signals.

9. An analog-digital processing system for processing and converting analog waveform differential data from any two analog signals paired from a plurality of analog signals into a plurality of digital waveform differential data, for processing said plurality of digital waveform differential data into a plurality of digital commutation data, and for demultiplexing one or more signals into a plurality of output signals as commutated by said plurality of digital commutation data, comprising:

a. input analog signal processor means processing said any two analog signals into a plurality of conditioned analog signal sets wherein each set is composed of a plurality of conditioned analog signals of a respective pair of two analog signals and having predetermined amplitude and bandwidth characteristics prepared for analog-to-digital conversion of said plurality of analog waveform differential data;

b. analog-to-digital converter means processing and converting analog waveform differential data from said plurality of conditioned analog signal sets into a plurality of digital waveform differential data sets including, in combination to a plurality of predetermined analog waveform differential data sets, a plurality of digital phase-angle differential data sets, a plurality of digital phasor differential data sets, a plurality of digital amplitude differential data sets, a plurality of digital peak amplitude strobe sets, and a plurality of digital signal-to-noise data sets;

c. digital data processor means processing said plurality of digital waveform differential data sets into a plurality of digital commutation data; and

d. output signal demultiplexer means demultiplexing one or more signals into a plurality of output signals as commutated by said plurality of digital commutation data.

10. The system as claimed in claim 9 further comprising a plurality of power amplifiers and associated transducers, respectively amplifying and reproducing said plurality of output signals.

11. A stereophonic/quadriphonic audio-digital processing system for processing and converting analog (hereinafter referred to as audio) waveform differential data (hereinafter referred to as audio localization data) from any two low-level audio signals paired from two or four low-level audio signals applied from a four channel preamplifier into a plurality of digital waveform differential data (hereinafter referred to as digital localization data), for processing said plurality of digital localization data into a plurality of digital commutation data, for processing said two or four high-level audio signals applied from said four-channel preamplifier into a system bass audio signal, ambience signals, recovered front direct audio signals, recovered rear matrix encoded audio signals, rear matrix encoded audio signals, and direct audio signals, thereby demultiplexed into a plurality of output audio signals, comprising:

a. four-channel preamplifier means selecting two or four-channel disc, tape, a.m./f.m.-multiplex, or auxiliary input audio signals and correspondingly producing two or four low-level audio signals having flat frequency response and for correspondingly controlling frequency response and amplitude of said input audio signals and producing two to four high-level audio signals;

b. input audio processor means processing said two or four low-level audio signals into two or four bandpassed audio signals having predetermined bandwidth and amplitude characteristics, processing said two or four bandpassed audio signals into two or four bandpassed bias-amplitude leveled audio signals and into one to six pairs of bandpassed proportional-amplitude leveled audio signals;

c. analog-to-digital converter (hereinafter referred to as psychoacoustic data converter) means processing and converting said audio localization data from any two bandpassed bias-amplitude leveled audio signals of said two or four bandpassed bias-amplitude leveled audio signals and from bandpassed proportional-amplitude leveled audio signals of said one to six pairs of bandpassed proportional-amplitude leveled audio signals into a plurality of digital localization data including, in corresponding combinations to predetermined audio localization data, a plurality of digital phase-angle differential data sets, a plurality of digital phasor differential data sets, a plurality of digital amplitude differential data sets, a plurality of digital peak amplitude strobe sets, and a plurality of digital signal-to-noise data sets;

d. data processor (hereinafter referred to as psychoacoustic data processor) means psychoacoustically data processing (a digital process analogous to the brain'"'"'s binaural fusion process) said plurality of digital localization data into a plurality of digital commutation data;

e. output audio processor means processing said two or four high-level audio signals and two bandpassed bias-amplitude leveled audio signals of said two or four bandpassed bias-amplitude leveled audio signals responsive to a plurality of Boolean operations performed on said digital commutation data, into a plurality of processed audio signals including, in combination to frequency, phase, and amplitude activity throughout each bandwidth of said two or four high-level audio signals, a system bass audio signal, ambience signals, recovered front direct audio signals, recovered rear matrix encoded audio signals, direct audio signals, and matrix encoded audio signals; and

f. output demultiplexer (hereinafter referred to as psychoacoustic audio demultiplexer) means distributing and demultiplexing said plurality of processed audio signals are commutated by said plurality of digital commutation data into a plurality of output audio signals.

12. The system as claimed in claim 11 wherein said input audio processor means include:

a. active audio-bandpass filter means bandpass filtering said two or four low-level audio signals, thereby producing two or four bandpassed audio signals with each audio signal having a predetermined minimum to maximum amplitude range and a predetermined bandwidth of approximately 400 Hz to 4 kHz;

b. automatic proportional-amplitude leveler means pairing any two said two or four bandpassed audio signals and producing from one to six pairs of proportional-amplitude leveled audio signals with each pair having one leveled output signal maintained at a predetermined amplitude and the amplitude of the second leveled audio output signal maintained at the same instantaneous decibel ratio as the lower amplitude input bandpassed audio signal is to the higher amplitude input bandpassed audio signal; and

c. automatic bias-amplitude leveler means leveling and combining each bandpassed audio signal of said two or four bandpassed audio signals with a predetermined reference frequency bias signal representative of predetermined audio signal-to-noise reference levels, producing two or four bias-free leveled audio signals having predetermined amplitudes, and recovering two or four said predetermined reference bias signals whereby the amplitude of each predetermined reference frequency bias signal is inversely proportional to the amplitude of the bandpassed audio signal and said predetermined reference bias signal amplitude having two predetermined signal-to-noise reference levels, whereby a first predetermined reference bias signal amplitude represents bandpassed audio signal threshold at or above a first predetermined noise signal amplitude and a second predetermined reference bias signal amplitude represents bandpassed audio signal dropout at or below a second predetermined noise signal amplitude.

13. The system as claimed in claim 11 wherein said psychoacoustic data converter means include:

a. automatic threshold-dropout decoder means detecting each recovered reference frequency bias signal of said two or four predetermined reference frequency bias signals and producing two or four detected reference frequency bias signals, decoding bandpassed audio signal threshold and dropout from each detected reference frequency bias signal, producing one to four digital threshold binary digits, producing one to four digital dropout binary digits, producing one to four digital OR-threshold binary digits, and producing one to four digital AND-dropout binary digits;

b. phase-angle processor-memory means pairing any two bias-free leveled audio signals of said two or four bias-free leveled audio signals, converting predetermined audio phase-angle differential data, composed of a plurality of zero-amplitude-cross-over coincident and anti-coincident signal pulses, having variable pulse width means compensating for media phase shift of said any two bias-free amplitude leveled audio signals, into a plurality of digital phase-angle differential data whose plurality of digital phase-angle differential binary digits are stored in memory elements, therein inhibited from changing to opposite binary states (from a "0" to a "1" or from a "1" to a "0") by said one to four digital OR-threshold binary digits and therein cleared to inactive binary digit states (either all "0" or all "1" depending on the functional requirements of an interfacing logic means) by said one to four digital AND-dropout binary digits, said plurality of digital phase-angle differential binary digits further decoded into a random digital phase-angle differential binary digit representative of all nonpredetermined phase angle differentials responsive to all inactive binary digits stored in said memory elements, and including hardwired expansion means to add eighteen phase-angle encoded channels to the system responsive to the four-channel state of a 2/4-channel mode binary digit ( a given binary state representing four-channel and the opposite binary state representing two-channel audio signals), and decoding a plurality of digital phase-angle binary digits into a plurality of digital field activity data composed of a plurality of binary digits representing any one active digital phase-angle differential binary digit or random digital phase-angle differential binary digit being active in response to any said two of said two or four bias-free leveled audio signals);

c. peak amplitude strobe generator means detecting each bias-free leveled audio signal of said two or four bias-free leveled audio signals, converting a predetermined peak amplitude voltage of each detected said bias-free leveled audio signal into a peak amplitude strobe, encoding any two digital peak amplitude strobes into one to four digital OR-peak amplitude strobes therein correspondingly inhibited by said one to four digital OR-threshold binary digits;

d. phasor differential processor-memory means pairing any two bias-free leveled audio signals of said two or four bias-free leveled audio signals, processing predetermined audio phasor differential data composed of a plurality of algebraic difference signals into a corresponding DC voltage difference signal indirectly proportional to the common-mode of said any two bias-free leveled audio signals, converting said DC voltage difference signal into a plurality of digital phasor differential data whose plurality of digital phasor differential binary digits are stored in memory elements, therein loaded by said one to four digital OR-peak amplitude strobes, and therein cleared to inactive states by a digital system initialization binary digit produced by said psychoacoustic data processor means; and

e. amplitude differential processor-memory means converting each of said one to six pairs of proportional amplitude leveled audio signals into a plurality of digital amplitude differential data composed of a plurality of digital amplitude ratio binary digits loaded into corresponding memory elements by said one to four digital OR-peak amplitude strobes and therein cleared to inactive binary states by said digital system initialization binary digit.

14. The system as claimed in claim 11 wherein said psychoacoustic data processor means include:

a. psychoacoustic data translator means translating said one to four digital dropout binary digits, said plurality of digital field activity data, said plurality of digital phase-angle differential data, said plurality of digital phasor differential data, and said plurality of digital amplitude differential data into a plurality of digital translated data, a plurality of encoded digital 2-channel phase-angle differential data, and a plurality of digital system control signals composed of a digital system power-on binary digit, a digital system initialization binary digit, and a digital 2/4 channel mode binary digit representing two active low-level input audio signals when in a given binary state and four active low-level audio signals when in the opposite binary state;

b. automatic-manual format selector means for manually entering into a register one of a plurality of digital four-channel format selects and one of a plurality of digital two-channel format selects, for automatically entering into a register one of a plurality of digital two-channel format selects and one of a plurality of digital four-channel format selects as preset by said digital power-on binary digit, for gating said one of a plurality of digital two-channel format selects when said digital 2/4 channel mode binary digit is in a predetermined two-channel binary state ("0" or "1"), for gating said one of a plurality of digital four-channel format selects when said digital 2/4 channel mode binary digit is in the opposite state ("1" or "0"), and producing a plurality of digital encoded format selects from a predetermined number of digital format selects;

c. quadrified format encoder-selector means encoding said plurality of digital translated data into a plurality of digital encoded translated data, encoding said plurality of digital encoded translated data into a plurality of digital encoded format data thereby selected by one of said plurality of digital encoded format selects;

d. quadrified rotation-position selector means parallel data loading a plurality of binary digits of said one of a plurality of digital format data into an end-around shift register (output of last shift register stage fed back to input of first shift register stage), serial shifting said plurality of binary digits of said one of a plurality of digital format data a predetermined number of shift register stages as manually entered into a field rotation position register or as preset by said digital power-on binary digit, strobing and converting the serial shifted said plurality of binary digits of said one of a plurality of digital format data into corresponding parallel binary digits thereby loaded into a field rotation position register producing a plurality of binary digits of one of a plurality of digital field rotation position data buffered from said parallel and serial conversion operations, producing one of a plurality of output digital field rotation position data and a plurality of digital field rotation position selects;

e. quadrified configuration encoder-selector encoding said output digital field rotation position data into digital encoded field rotation position data, for manually selecting a system configuration select and thereby encoding a plurality of digital encoded system configuration selects, producing digital system configuration data whose number of binary digits equal the number of output audio channels configured in the system and therein selected from said digital encoded field rotation position data by said digital encoded system configuration selects, said digital encoded configuration selects overridden by a digital headphones-in override binary digit, thereby selecting four digital encoded system configuration binary digits that equal the number of output audio channels required by 4-channel headphones and correspondingly producing a digital defeat graphic-room equalizer binary digit (a control signal used to bypass a unit used to equalize the acoustical response of a room and associated transducers but would otherwise cause coloration of said 4-channel headphones);

f. direct channel output selector means encoding said digital field rotation position selects into digital encoded field rotation position selects, selecting said system configuration data by corresponding said digital encoded field rotation position selects and producing one of a plurality of digital direct commutation data composed of a plurality of digital direct commutation binary digits; and

g. ambient channel output selector means encoding said digital system configuration data into digital ambient commutation data composed of a plurality of binary digits used to time share the ambience audio signals with the direct audio signals reproduced by the system transducers, thereby producing ambience audio signals geographically opposite to the reproduced direct audio signals.

15. The system as claimed in claim 11 wherein said output audio processor means include:

a. dynamic audio output controller means for combining said two or four high-level audio signals and producing a dynamic control audio signal, for processing said two or four high-level audio signals into two or four graphic room-equalized audio signals, for selecting said two or four graphic room-equalized audio signals when said digital defeat graphic-room equalizer binary digit is inactive, for selecting said two or four high-level audio signals when said digital defeat graphic-room equalizer binary digit is active, for combining said two or four graphic room-equalized audio signals or said two or four high-level audio signals and producing a bass audio signal, for respectively highpass filtering each graphic room-equalized audio signal or each high-level audio signal of said two or four graphic room-equalized audio signals or said two or four high-level audio signals and producing two or four high-passed audio signals, and for combining said two or four high-passed audio signals and producing a combined high-passed audio signal;

b. automatic-dynamic-loudness controller means processing said bass audio signal and said dynamic control audio signal, comprising a direct current voltage which varies directly proportional to the peak amplitude of said two or four high-level audio signals, thereby producing a dynamic bass audio signal that automatically and dynamically tracks the Fletcher-Munson Equal Loudness Contours for bass audio frequencies below approximately 500 Hz, for decoding said plurality of digital encoded system configuration selects into attenuator selects that attenuate said dynamic bass audio signal and produces a system bass audio audio signal whose amplitude is equalized for the number of transducer or headphones output channels configured in the system, for selectively distributing said system bass audio signal to only the four-channel headphones when said digital headphones-in ovrride binary digit is active, or to the number of transducer output channels configured in the system or to a manually selected auxiliary bass system when said digital headphones-in override binary digit is inactive, and

c. dynamic ambience/matrix encoded audio recovery controller means controlling said high-passed audio signal for producing reverb or digital delayed ambience audio signals by a suitable unit connected to the system, for producing a dynamic control signal responsive to said dynamic control audio signal and thereby processing said two bias-free leveled audio signals into recovered concert hall ambience or recovered direct audio signals when rear matrix encoded audio signals predominate or recovered rear matrix encoded audio signals when direct audio signals predominate and as dynamically restored by said dynamic control signal and conditionally decoded by said plurality of encoded digital two-channel phase-angle differential data and by said digital 2/4 channel mode binary digit when in the active two-channel state, for automatically presetting by said digital power-on binary digit and manually selecting auto-concert hall ambience audio signals, matrix recovered audio signals, four-channel reverberation/digital delayed ambience audio signals, auto-synthesized ambience audio signals, or two-channel reverberation/digital delayed ambience audio signals responsive to said digital 2/4 channel mode binary digit.

16. The system as claimed in claim 11 wherein said psychoacoustic audio demultiplexer means include:

a. quadrified audio format selector means encoding predetermined digital format selects into digital encoded format selects, for formatting said two or four high-passed audio signals responsive to said digital encoded format selects into four formatted high-passed audio signals; and

b. quadrified output audio demultiplexer means demultiplexing said four formatted high-passed audio signals as commutated by said digital direct commutation data into one or more simultaneously direct audio signals or matrix encoded audio signals demultiplexed to a plurality of output audio channels, demultiplexing said system ambience audio signals, said recovered matrix recovered audio signal, said recovered direct audio signals, as commutated by said digital ambient commutation data into one or more simultaneously time-sharing output audio channels geographically opposite said direct output audio channels, for distributing said system bass audio signal and demultiplexing said direct audio signals, said ambience audio signals, said recovered matrix encoded audio signals, said recovered direct audio signals, and said matrix encoded audio signals to said four-channel headphones or to the total configuration of output audio channels as controlled by said digital headphones-in override binary digit.

17. The system as claimed in claim 11 further comprising a plurality of power amplifiers and a corresponding plurality of transducers, respectively amplifying and reproducing a plurality of system bass audio signals, said direct audio signals, said matrix encoded audio signals, said ambience audio signals, said recovered front direct audio signals, and said recovered matrix encoded audio signals.

18. The system as claimed in claim 11 further comprising system operation and status means visually displaying a plurality of predetermined audio signals, a plurality of predetermined audio control signals, and a plurality of predetermined binary digits of a plurality of predetermined digital data.

19. A method for audio-digital processing two (stereophonic) or four (quadriphonic, also incorrectly lexicographed as quadraphonic) low-level audio signals into a plurality of digital commutation data for demultiplexing corresponding two (stereophonic) or four (quadriphonic) high-level audio signals into a plurality of output audio signals, said method comprising the following steps:

a. filtering said two (stereophonic) or four (quadriphonic) low-level audio signals producing two or four bandpassed audio signals;

b. processing said two or four bandpassed audio signals and a predetermined bias reference frequency signal into two or four bias-amplitude leveled audio signals;

c. processing any two bandpassed audio signals paired from said two or four bandpassed audio signals into one to six pairs of proportional-amplitude leveled audio signals;

d. recovering and converting two or four bias reference frequency signals from said two or four bias-amplitude leveled audio signals into a plurality of digital signal-to-noise data;

e. recovering and converting any two bias-free amplitude leveled audio signals filtered and paired from said two or four bias-amplitude leveled audio signals into a plurality of digital phase-angle differential data, a plurality of random-degree digital phase-angle binary digits, and a plurality of digital field activity data;

f. processing and converting two or four bias-free amplitude leveled audio signals into a plurality of digital peak amplitude strobes;

g. processing and converting each pair of bias-free amplitude leveled audio signals into a plurality of digital phasor differential data;

h. processing and converting each pair of said one to six pairs of proportional-amplitude leveled audio signals into a plurality of digital amplitude differential data;

i. processing and translating psychoacoustic data relationships of said plurality of digital signal-to-noise data, said plurality of digital field activity data, said plurality of digital phase-angle differential data, said plurality of random-degree digital phase-angle differential binary digits, said plurality of digital peak amplitude strobes, said plurality of digital phasor differential data, and said plurality of digital amplitude differential data into a plurality of digital translated data and digital system control signals;

j. automatically and manually selecting one of a plurality of digital format selects as controlled by said digital system control signals and producing digital format selects and digital encoded format selects;

k. encoding said digital translated data into a plurality of digital quadrifield format data as selected by said digital format selects thereby selecting one predetermined digital quadrifield data format of a plurality of digital quadrifield data formats;

l. automatically and manually selecting one of a plurality of digital rotation selects to control loading and shifting operations, thereby processing said predetermined digital quadrifield data format into digital quadrifield rotation data;

m. automatically and manually selecting one of a plurality of digital configuration selects to control the encoding of said digital quadrifield rotation data into digital quadrifield configuration data;

n. encoding said digital quadrifield rotation selects and selecting said digital quadrifield configuration data producing a plurality of digital direct commutation data;

o. decoding said digital quadrifield configuration data producing a plurality of digital ambient commutation data in a time-shared correspondence with said plurality of digital direct commutation data;

p. dynamically controlling said two or four high-level audio signals producing a system bass audio signal, two or four high-passed audio signals, a dynamic control audio signal, and a combined high-passed audio signal;

q. dynamically controlling said two bias-free amplitude leveled audio signals responsive to said dynamic control audio signal, thereby producing recovered concert hall ambience audio signals, recovered front direct audio signals, or recovered matrix encoded audio signals, for controlling reverberation ambience signals or digital delayed ambience audio signals, and for selecting one of of a plurality of audio recovery modes for dynamically processing said concert hall ambience audio signals, said reverberation ambience signals or said digital delayed ambience audio signals or said recovered front direct audio signals or said recovered matrix encoded audio signals, responsive to said digital system control signals and said digital translated data;

r. dynamically controlling said system bass audio signal by said dynamic control audio signal producing automatic dynamic bass audio that tracks the Fletcher-Munson Equal Loudness Contours for bass audio frequencies below approximately 500 Hz and for attenuating the amplitude of said automatic dynamic bass audio signal in response to said digital encoded configuration control selects and to said digital system control signal, thereby producing a system bass audio signal compatible with the number of output audio channels configured in the system, with the use of four-channel headphones, and with the use of an auxiliary bass system;

s. formatting said two or four high-passed audio signals, responsive to said plurality of digital encoded format selects, said plurality of digital field rotation position selects, and said plurality of digital configuration selects into a plurality of high-passed audio signals;

t. demultiplexing said plurality of high-passed audio signals commutated by said plurality of digital direct commutation data, responsive to said plurality of digital format encoded data, to said plurality of digital rotation position data, and to said plurality of digital configuration data, into a plurality of output audio signals;

u. distributing and combining said system bass audio signal with said plurality of output audio signals; and

v. demultiplexing said ambience audio signals or recovered matrix encoded audio signals or recovered front direct audio signals, commutated by said plurality of digital ambient commutation data, into a plurality of geographically time-sharing output audio signals.

20. The method as claimed in claim 19 further comprising the step of respectively amplifying and reproducing said plurality of output audio signals and and said plurality of geographically time-sharing output audio signals by a corresponding plurality of power amplifiers and associated transducers or by four-channel headphones when connected to the system, therein producing a digital headphones-in override binary digit which correspondingly reconfigures said plurality of digital direct commutation data and said plurality of digital ambient commutation data to produce four compatible channels of headphone output audio signals.

21. The method as claimed in claim 19 further comprising the step of visually displaying a plurality of predetermined audio signals, a plurality audio control signals, and a plurality of digital data.

22. A method for data processing a plurality of digital field activity binary digits, a plurality of digital dropout binary digits, a plurality of digital phase-angle differential binary digits, a plurality of digital phasor differential binary digits, and a plurality of digital amplitude differential binary digits into a plurality of digital translated binary digits, a plurality of digital two-channel encoded phase-angle differential binary digits, a digital system power-on binary digit, a digital system initialization binary digit, and a digital 2/4 channel mode binary digit, whereby said data processing produces a plurality of digital commutation data for demultiplexing two or four high-level audio signals into 1, 2, 3, 4, 5, . . . 12 . . . 16 . . . 32 . . . 72 . . . n output audio signals having near infinite channel separation and minimum directional ambiguities resolved for monophonic, stereophonic, and quadriphonic audio signals produced by, but not limited to, a.m./f.m.-multiplex equipment and monophonic, stereophonic, and quadriphonic (QS, SQ, and CD-4) discs and tapes, said method comprising the following steps:

a. decoding four inactive digital field activity binary digits and four active digital dropout binary digits into a digital system initialization binary digit, thereby decommutating all said output signals containing only noise during this decoded condition, said decommutating also responsive to a predetermined manual adjustment of audio signal threshold and dropout detection means to eliminate disc surface noise, tape and f.m. hiss, a.m. noise during silent speech/music passages and to eliminate objectionable speech/music distorted by any media noise;

b. decoding four inactive digital field activity binary digits and exclusive one inactive binary digit of four digital dropout binary digits into a predetermined digital override commutation binary digit of four possible digital override commutation binary digits, thereby precluding said data processing method from executing an illogical Boolean operation, and thus maintaining a demultiplexed output audio signal in its logical output audio channel while all but one of said two or four high-level audio signals are at audio signal dropout and said one high-level audio signal is at or above audio signal threshold;

c. decoding four inactive digital field activity binary digits and a first and a third inactive binary digit of four digital dropout binary digits, representative of a first and a third high-level audio signal of four high-level audio signals at or above audio signal threshold, into two predetermined digital overrride commutation binary digits, thereby precluding said data processing method from executing an illogical Boolean operation, and thus maintaining two demultiplexed output audio signals in their logical output audio channels while a second and a fourth high-level audio signal of said four high-level audio signals are at audio signal dropout and thereby further enhancing channel separation and directionality of 2 or 4-channel media;

d. decoding four inactive digital field activity binary digits and a second and a fourth inactive binary digit of four digital dropout binary digits, representative of a second and a fourth high-level audio signal of said four high-level audio signals at or above audio signal threshold, into two predetermined digital override commutation binary digits, thereby precluding said data processing method from executing an illogical Boolean operation, and thus maintaining two demultiplexed output audio signals in their logical output audio channels while a first and a third high-level audio signal of said four high-level audio signals are at audio signal dropout and thereby further enhancing channel separation and directionality of 2 or 4-channel media;

e. decoding an exclusively active digital field activity binary digit, when only a first and a second high-level audio signal of said two or four high-level audio signals are at or above audio signal threshold, and an active zero-degree digital phase-angle differential binary digit of said plurality of digital phase-angle differential data into a digital field discrete binary digit representative of said first and second high-level audio signals having identical complex waveforms varying only in amplitude ratio, thereby translating said digital field discrete binary digit and a corresponding plurality of digital amplitude differential data, whose plurality of digital amplitude differential binary digits correspondingly represent the amplitude ratio of said identical complex waveforms of said first and second high-level audio signals, into one active digital commutation binary digit out of a plurality of digital commutation data binary digits and thereby further enhancing channel separation and directionality of 2 or 4-channel media by providing a Boolean operation to place a normally phantom sound image into a predetermined point-source transducer location within the sound reproducing environment;

f. decoding an exclusively active digital field activity binary digit, when only a first and a second high-level audio signal of said two or four high-level audio signals are at or above audio signal threshold, and an active random-degree digital phase-angle differential binary digit of said plurality of digital phase-angle differential data into a digital field phasor binary digit representative of said first and second high-level audio signals having non-identical complex waveforms varying in phasor differential, thereby translating said digital field phasor binary digit and a corresponding plurality of digital phasor differential data, whose plurality of digital phasor differential binary digits are active two at a time and correspondingly represent two digital amplitude differential binary digit positions having equal phasor position values to either side of a one-to-one amplitude-ratio digital amplitude differential binary digit and whose equal phasor position values from said one-to-one amplitude-ratio digital amplitude differential binary digit are directly proportional to the phasor differential and indirectly proportional to the common mode of said non-identical complex waveforms of said first and second high-level audio signals, into two active digital commutation binary digits and thereby enhancing channel separation and directionality of 2 or 4-channel media by providing a Boolean operation to place two or more normally phantom sound images into two predetermined point-source transducer locations within the sound reproducing environment (e.g. two musical instruments reproduced from two point-source transducers located to either side of a phantom reproduced center singer having enhanced directionality due to a significant reduction in the Haas Effect produced by two relatively close transducers comprising a smaller segment of the sound reproducing field;

conventional stereophonic/quadriphonic systems will reproduce said two musical instruments having close proximity to said center singer as three phantom images highly susceptible to the Haas Effect per two widely placed transducers comprising one total sound field;

said center singer will revert to a center point-source transducer corresponding to the phantom position when said two musical instruments are counterpoint, have SPL at or just above audio threshold, and when, in the course of a musical passage, said active random-degree digital phase-angle differential binary digit reverts to said active zero-degree digital phase-angle differential binary digit of step e. above);

g. decoding the two-channel state of said digital 2/4 channel mode binary digit and a 90-degree digital phase-angle differential binary digit, responsive to said variable pulse width media phase shift correction control and representative of a first high-level audio signal leading a second high-level audio signal by 90-degrees, into a digital commutation binary digit used to demultiplex an Lb (left back or rear) matrix encoded audio signal into a left rear corner transducer and recovered direct audio signals in front transducers, thereby resolving signal loss and directional ambiguities exibited by an SQ gain riding logic system;

h. decoding the two-channel state of said digital 2/4 channel mode binary digit and a 90-degree digital phase-angle differential binary digit, responsive to said variable pulse width media phase shift correction control and representative of a second high-level audio signal leading a first high-level audio signal by 90-degrees, into a digital commutation binary digit used to demultiplex a Rb (right back or rear) matrix encoded audio signal into a right rear corner transducer and recovered direct audio signals in front transducers, thereby resolving signal loss and directional ambiguities exibited by an SQ gain riding logic system;

i. decoding the two-channel state of said digital 2/4 channel mode binary digit and a 180-degree digital phase-angle differential binary digit, responsive to said variable pulse width media phase shift correction control and representative of a first high-level audio signal leading a second high-level audio signal by 180-degrees or said second high-level audio signal leading said first high-level audio signal by 180-degrees, into a digital commutation binary digit used to demultiplex a matrix encoded audio signal into a center rear transducer and recovered direct audio signals into front transducers, thereby providing an additional 180-degree phase-angle for matrix encoding an audio signal not presently encoded by SQ or QS systems, since audio reproduction of current systems cause phase cancellation which is resolved by said demultiplexing method of this system;

j. decoding an exclusively active digital field activity binary digit, when only a second and a third high-level audio signal of said two or four high-level audio signals are at or above audio signal threshold, and an active zero-degree digital phase-angle differential binary digit of said plurality of digital phase-angle differential data into a digital field discrete binary digit representative of said second and third high-level audio signals having identical complex waveforms varying only in amplitude ratio, thereby translating said digital field discrete binary digit and a corresponding plurality of digital amplitude differential data, whose plurality of digital amplitude differential binary digits correspondingly represent the amplitude ratio of said identical complex waveforms of said second and third high-level audio signals, into one active digital commutation binary digit out of a pluarity of digital commutation data binary digits and thereby further enhancing channel separation and directionality of four-channel tape or CD-4 media by providing a Boolean operation to place a normally phantom sound image into a predetermined point-source transducer location within the sound reproducing environment;

k. decoding an exclusively active digital field activity binary digit, when only a second and a third high-level audio signal of said two or four high-level audio signals are at or above audio signal threshold, and an active random-degree digital phase-angle differential binary digit of said plurality of digital phase-angle differential data into a digital field phasor binary digit representative of said second and third high-level audio signals having non-identical complex waveforms varying in phasor differential, thereby translating said digital field phasor binary digit and a corresponding plurality of digital phasor differential data, whose plurality of digital phasor differential binary digits are active two at a time and correspondingly represent two digital amplitude differential binary digit positions having equal phasor position values to either side of a one-to-one amplitude-ratio digital amplitude differential binary digit and whose equal phasor position values from said one-to-one amplitude-ratio digital amplitude differential binary digit are directly proportional to the phasor differential and indirectly proportional to the common mode of said non-identical complex waveforms of said second and third high-level audio signals, into two active digital commutation binary digits and thereby enhancing channel separation and directionality of four-channel tape or CD-4 media by providing a Boolean operation to place two or more normally phantom sound images into two predetermined point-source transducer location within the sound reproducing environment;

l. decoding an exclusively active digital field activity binary digit, when only a third and a fourth high-level audio signal of said two or four high-level audio signals are at or above audio signal threshold, and an active zero-degree digital phase-angle differential binary digit of said plurality of digital phase-angle differential data into a digital field discrete binary digit representative of said third and fourth high-level audio signals having identical complex waveforms varying only in amplitude ratio, thereby translating said digital field discrete binary digit and a corresponding plurality of digital amplitude differential data, whose plurality of digital amplitude differential binary digits correspondingly represent the amplitude ratio of said identical complex waveforms of said third and fourth high-level signals, into one active digital commutation binary digit out of a plurality of digital commutation data binary digits and thereby further enhancing channel separation and directionality of four-channel tape or CD-4 media by providing a Boolean operation to place a normally phantom sound image into a predetermined point-source transducer location within the sound reproducing environment;

m. decoding an exclusively active digital field activity binary digit, when only a third and a fourth high-level audio signal of said two or four high-level audio signals are at or above audio signal threshold, and an active random-degree digital phase-angle differential binary digit of said plurality of digital phase-angle differential data into a digital field phasor binary digit representative of said third and fourth high-level audio signals having non-identical complex waveforms varying in phasor differential, thereby translating said digital field phasor binary digit and a corresponding plurality of digital phasor differential data, whose plurality of digital phasor differential binary digits are active two at a time and correspondingly represent two digital amplitude differential digit positions having equal phasor position values to either side of a one-to-one amplitude-ratio digital amplitude differential binary digit and whose equal phasor position values from said one-to-one amplitude-ratio digital amplitude differential binary digit are directly proportional to the phasor differential and indirectly proportional to the common mode of said non-identical complex waveforms of said third and fourth high-level audio signals, into two active digital commutation binary digits and thereby enhancing channel separation and directionality of four-channel tape or CD-4 media by providing a Boolean operation to place two or more normally phantom sound images into two point-source transducer locations within the sound reproducing environment;

n. decoding an exclusively active digital field activity binary digit, when only a fourth and a first high-level audio signal of said two or four high-level audio signals are at or above audio signal threshold, and an active zero-degree digital phase-angle differential binary digit of said plurality of digital phase-angle differential data into a digital field discrete binary digit representative of said fourth and first high-level audio signals having identical complex waveforms varying only in amplitude ratio, thereby translating said digital field discrete binary digit and a corresponding plurality of digital amplitude differential data, whose plurality of digital amplitude differential bianary digits correspondingly represent the amplitude ratio of said identical complex waveforms of said fourth and first high-level audio signals, into one active digital commutation binary digit out of a plurality of digital commutation data binary digits and thereby further enhancing channel separation and directionality of four-channel tape or CD-4 media by providing a Boolean operation to place a normally phantom sound image into a predetermined point-source transducer location within the sound reproducing environment;

o. decoding an exclusively active digital field activity binary digit, when only a fourth and a first high-level audio signal of said two or four high-level audio signals ar at or above audio signal threshold, and an active random-degree digital phase-angle differential binary digit of said plurality of digital phase-angle differential data into a digital field phasor binary digit representative of said fourth and first high-level audio signals having non-identical complex waveforms varying in phasor differential, thereby translating said digital field phasor binary digit and a corresponding plurality of digital phasor differential data, whose plurality of digital phasor differential binary digits are active two at a time and correspondingly represent two digital amplitude differential digit positions having equal phasor position values to either side of a one-to-one amplitude-ratio digital amplitude binary digit and whose equal phasor position values from said one-to-one amplitude-ratio digital amplitude differential binary digit are directly proportional to the phasor differential and indirectly proportional to the common mode of said non-identical waveforms of said fourth and first high-level audio signals, into two active digital commutation binary digits and thereby enhancing channel separation and directionality of four-channel tape or CD-4 media by providing a Boolean operation to place two or more normally phantom sound images into two point-source transducer locations within the sound reproducing environment;

p. decoding two active digital field activity binary digits, when a first, second, and third or a second, third, and a fourth or a third, fourth, and a first or a fourth, first, and a second high-level audio signal of said two or four high-level audio signals are at or above audio threshold, and two corresponding active zero-degree digital phase-angle differential binary digits into two corresponding digital field discrete binary digits and translating said two digital field discrete binary digits and a corresponding plurality of digital amplitude differential data into an active digital commutation binary digit for each of said two discrete fields, wherein the active digital commutation binary digit of the adjacent discrete field is inhibited if it corresponds to a maximum amplitude ratio whose corresponding transducer location is directly adjacent to either extreme transducer location of the predominate adjacent field, thereby eliminating a CD-4 media adjacent mirror sound image or otherwise permitting transducer activity in both adjacent fields when deliberately panpotted by the recording engineer to produce special-effects by using amplitude ratio values that are lower than ratio values producing CD-4 cross-talk;

q. decoding two active digital field activity binary digits, when a first, second, and a third or a second, third, and a fourth or a third, fourth, and a first or a fouth, first, and a second high-level audio signal of said two or four high-level audio signals are at or above audio threshold, and an active zero-degree digital phase-angle differential binary digit and an active random-degree phase-angle differential binary digit into a corresponding digital field discrete binary digit and a digital field phasor binary digit and translating said digital field discrete binary digit and a corresponding plurality of digital amplitude differential data and said digital field phasor binary digit and a corresponding plurality of digital phasor differential data into a one active digital commutation binary digit for the discrete field and two active digital commutation binary digits for the phasor field, wherein one of said two active digital commutation binary digit is inhibited if it corresponds to a maximum amplitude ratio or phasor differential whose corresponding transducer location is directly adjacent to either extreme location of the predominate adjacent field and wherein additional predetermined digital commutation binary digits of the phasor field are logically inhibited to eliminate CD-4 mirror images while permitting different sound images to be reproduced in two adjacent transducer fields (e.g. a center singer point-source in the center transducer of the discrete field and a guitar or other musical instruments point-source and/or phantom sound images in the non-adjacent extreme transducer locations of the phasor field with said phantom images reproduced from a smaller field segment and significantly less susceptible to the Haas Effect);

r. decoding two active digital field activity binary digits, when a first, second, and third or a second, third, and a fourth or a third, fourth, and a first or a fourth, first, and a second high-level audio signal of said two or four high-level audio signals are at or above audio threshold, and two correspondingly active random-degree digital phase-angle differential binary digits into two corresponding digital field phasor binary digits and translating said two corresponding digital field phasor binary digits and a corresponding plurality of digital phasor differential data of two phasor fields into two active digital commutation binary digits representative of a first phasor field and two active digital commutation binary digits representative of a second phasor field, wherein each phasor field operates independently of the adjacent phasor field (having no corresponding inhibits) by providing a Boolean operation to place two or more normally phantom sound images into two predetermined point-source transducer locations within the sound reproducing environment (e.g. from two musical instruments with each reproduced from a transducer in each field comprising a wall of a room and with a second transducer in each field reproducing said two musical instruments and thereby causing crosstalk, unwanted in any system and inherent in this system, but reproduced with a significant reduction in the Haas Effect;

to three musical instruments or voices reproduced from three corresponding point-source transducers and thereby eliminating directional ambiguities experienced by SQ gain riding logic systems; and

up to a full 100 piece orchestra having geometrically placed SPL images representing the brass, violins, typani, etc. faithfully placed and reproduced by two transducers in each adjacent field, thus, as the musical composition transitions from one lead violin being reproduced from its associated transducer to 25 violins, then the phasor field of corresponding transducers responds by reproducing the 25 violins from two transducers on either side of a geometric field center transducer in accordance with the SPL distribution of 25 violins as in a real-life performance and with the adjacent phasor field functioning in a similar manner for the brass);

s. decoding three active digital field activity binary digits, when all four high-level audio signals are at or above audio threshold followed by a first and a second or a second and a third or a third and a fourth or a fourth and a first high-level audio signal subsequently decaying to or below audio dropout, and one active zero-degree digital phase-angle differential binary digit into a digital field discrete binary digit, and thereby reverting to the translating sub-step of step e. above;

t. decoding three active digital field activity binary digits, when all four high-level audio signals are at or above audio threshold followed by a first and a second or a second and a third or a third and a fourth or a fourth and a first high-level audio signal subsequently decaying to or below audio dropout, and one active random-degree digital phase-angle differential binary digit into a digital field phasor binary digit, and thereby reverting to the translating sub-step of step f. above;

u. decoding four active digital field activity binary digits, when all four high-level audio signals are at or above audio threshold and containing identical audio waveforms varying only in amplitude, and four active zero-degree digital phase-angle differential binary digits into four corresponding digital field discrete binary digits, thereby translating said four corresponding digital field discrete binary digits and a plurality of corresponding digital amplitude differential data into four digital commutation binary digits, one for each transducer field, and therein inhibited by predetermined maximum amplitude differential binary digits, thereby placing one point-source sound image into only one of four transducers, with said one transducer representing the predominate sound field and thus eliminating unwanted CD-4 mirror sound images, or into four transducers, one in each field or wall of the sound reproducing environment and thereby permitting transducer activity in any two adjacent or all four fields when deliberately panpotted by the recording engineer to produce special effect amplitude ratio values that are lower than the CD-4 ratio values producing crosstalk;

v. decoding four active digital field activity binary digits, when all four high-level audio signals are at or above audio threshold and wherein two high-level audio signals contain identical audio waveforms varying in amplitude ratio and two high-level audio signals contain identical audio waveforms varying in amplitude ratio but non-identical to said identical audio waveforms of said first two high-level audio signals, and two correspondingly active zero-degree digital phase-angle differential binary digits and two correspondingly active random-degree digital phase-angle differential binary digits into two corresponding digital field discrete binary digits and two corresponding digital field phasor binary digits, thereby translating said two digital field discrete binary digits and a corresponding plurality of digital amplitude binary digits and said two digital field phasor binary digits and a corresponding plurality of digital phasor differential binary digits, responsive to a plurality of digital inhibit binary digits corresponding to maximum amplitude differential and phasor differential between any two high-level audio signals, into a plurality of digital commutation binary digits and thereby enhancing channel separation and directionality by providing a Boolean operation to determine if the two audio images belong in the predetermined front and rear transducers or in the predetermined right and left side transducers and thereby excluding said predetermined front and rear transducers or said predetermined left and right side transducers (e.g. this resolves CD-4 crosstalk when an audio image is intended to reside as a phantom image between the left side transducers and another audio image is intended to reside between the right side transducers and crosstalk images of both reside as a center image between the front transducers and said crosstalk images reside as center images between the rear transucers and further resolves CD-4 crosstalk by distinguishing whether said discrete images are crosstalk of a phasor image or if said phasor images are crosstalk of said discrete images);

w. decoding four active digital field activity binary digits, when all four high-level audio signals are at or above audio threshold and wherein two high-level audio signals contain identical audio waveforms varying in amplitude ratio and two high-level audio signals contain identical audio waveforms varying in amplitude ration but non-identical to said identical audio waveforms of said first two high-level audio signals, and one correspondingly active zero-degree digital phase-angle differential binary digit and three correspondingly active digital phasor differential binary digits into one active digital field discrete binary digit and three active digital field phasor binary digits, thereby translating said one active digital field discrete binary digit and a corresponding plurality of digital amplitude differential data and said three digital field phasor binary digits and a corrsponding plurality of digital phasor differential binary digits, representative of each digital field phasor binary digit, into a plurality of digital commutation binary digits and thereby enhancing channel separation and directionality by providing a Boolean operation to determine that a discrete audio image belongs in a predetermined front, or right, or rear, or left transducer and that a phasor audio image belongs in a predetermined phasor transducer pair directly opposite said predetermined transducer reproducing the discrete audio image, thereby further resolving CD-4 and four-channel tape deficiencies; and

x. decoding four active digital field activity binary digits, when all four high-level audio signals are at or above audio threshold and wherein all said four high-level audio signals contain non-identical audio waveforms varying in phasor differential between any two audio waveforms, and four active digital random degree binary digits into four corresponding digital field phasor binary digits and a corresponding plurality of digital phasor differential data, representative of each digital field phasor binary digit, into a plurality of digital commutation binary digits, thereby placing a phasor audio image in a predetermined pair of front transducers, another audio phasor image in a predetermined pair of right side transducers, another audio phasor image in a predetermined pair of rear transducers, and another audio phasor image in a predetermined pair of left side transducers and thereby resolving CD-4 and four-channel tape separation and directionality deficiencies (e.g. significantly reducing the Hass Effect by placing a plurality of violins in a predetermined right side wall transducer pair in accordance with the phasor differential (audio phasor function), a plurality of brass and typani in a predetermined rear wall transducer pair in accordance with the phasor differential and as accented by periodic discrete point-source images created by the counter-point typani, a plurality of woodwinds in a predetermined left side wall transducer pair in accordance with the phasor differential, and a piano and a soloist in a predetermined front wall transducer pair in accordance with the phasor differential and as accented by each point-source instance of a counterpoint piano or soloist, with further translations carried out in accordance with the musical score and total musical instrument and voice permutations).