Source-dependent acoustic, musical and/or other instrument processing and feedback system

• US 8,378,200 B1
• Filed: 08/07/2007
• Issued: 02/19/2013
• Est. Priority Date: 08/07/2006
• Status: Active Grant

• Current Assignee: Michael L. Beigel
• Original Assignee: Michael L. Beigel
• Inventors: Beigel, Michael
• Primary Examiner(s): UHLIR, CHRISTOPHER J
• Application Number:
  US11/890,442
• Time in Patent Office: 2,023 Days
• Field of Search: 846/59
• US Class Current: 84/659
• CPC Class Codes: G10H 1/0025 Automatic or semi-automatic music composition, e.g. producing random music, applying rules from music theory or modifying a musical piece automatically producing a series of tones G10H1/26
• CPC Class Codes: G10H 1/12 by filtering complex waveforms G10H1/14, G10H1/16 take precedence
• CPC Class Codes: G10H 2210/066 for pitch analysis as part of wider processing for musical purposes, e.g. transcription, musical performance evaluation; Pitch recognition, e.g. in polyphonic sounds; Estimation or use of missing fundamental
• CPC Class Codes: G10H 2220/116 for graphical editing of sound parameters or waveforms, e.g. by graphical interactive control of timbre, partials or envelope non-graphical waveform editing G10H2250/615
• CPC Class Codes: G10H 2220/351 Environmental parameters, e.g. temperature, ambient light, atmospheric pressure, humidity, used as input for musical purposes

Abstract

The Source-Dependent Instrument is a signal processing and signal generation system that uses one or more signal event generators that can be functionally activated and controlled by the analysis of an external input signal. These output generators and signal processors can be set to re-synthesize aspects of the input or synthesize a more complex or perceptually shifted output based on the input.

Claims

1. A source dependent instrument signal processing and signal generation system for a source dependent instrument which produces musical sounds, comprising:

an input interface for generating an input signal in response to and representative of an input event including an audible input event occurring in an environment external to the source dependent instrument signal processing and signal generation system and instrument and having input signal parameters, the audible input event comprising a quasi-indeterminate sound generated by at least one of (i) another sound source other than sound outputted by the source dependent instrument signal processing and signal generation system, and (ii) a plurality of people, and the input signal parameters including an audio parameter of the plurality of people;

analysis elements for receiving and analyzing the input signal to determine parameters thereof;

at least one function generator and at least one secondary audio signal generator for receiving the input signal from the analysis elements and the function generators outputting a control function signal based on and in response to the input signal and the secondary audio signal generators outputting a secondary audio signal based on and in response to the input signal;

an audio signal processer receiving the input signal and at least one of the control function signal and the secondary audio signal and responsive thereto for at least one of re-synthesizing the input signal and shifting parameters of the input signal to provide a first output signal having output parameters shifted in relation to and based on and responsive to the input signal parameters;

an output stage responsive to the first output signal from the processer for generating a second output signal responsive to the first output signal; and

a controller for adjusting at least one of the re-synthesizing and parameter shifting performed by the processor, further comprising a feedback loop for receiving the second output signal and feeding the first output signal back to the environment, and wherein the controller controls the feedback, wherein the environment is external to the source dependent instrument and the source dependant signal processing and signal generation system.

2. The source dependent instrument signal processing and signal generation system of claim 1, wherein the second output signal comprises musical sounds.

3. The source dependent instrument signal processing and signal generation system of claim 1, wherein the feedback loop is a first feedback loop and there is an additional feedback loop which feeds the first output signal back to the input interface through feedback signal lines that are coupled to the input interface.

4. The source dependent instrument signal processing and signal generation system of claim 1, wherein the analysis elements determine an input tonality of the input signal using FFT analysis, and wherein the first output signal includes a first output signal component based on the input tonality and the output signal includes a signal component based on the input tonality.

5. The source dependent instrument signal processing and signal generation system of claim 1, wherein the audible input event is further comprised of a specific predetermined sound, and the input signal parameters include the specific predetermined sound.

6. The source dependent instrument signal processing and signal generation system of claim 5, wherein a non-verbal sound is generated by a person operating a musical instrument located in the environment.

7. The source dependent instrument signal processing and signal generation system of claim 1, further comprising an additional input transducer for generating an additional input signal in response to and representative of a non-auditory event occurring in the environment external to the system and instrument and having additional input signal parameters.

8. The source dependent instrument signal processing and signal generation system of claim 7, wherein the processor comprises:

a bank of filters, each filter of the bank of filters being configured to receive the input signal and each having a corresponding center frequency and a corresponding signal input;

a set of envelope generators coupled to the bank of filters, each envelope generator being configured to receive an output of a corresponding filter of the bank of filters, and each envelope generator being configured to operate in accordance with at least an attack time Tc parameter and a decay time Td parameter;

a set of oscillators for generating audio signals;

a set of signal controlled amplifiers coupled to the set of envelope generators and the set of oscillators, each signal controlled amplifier being configured to receive the output of a corresponding envelope generator and a corresponding oscillator; and

an output stage coupled to the set of signal controlled amplifiers for summing the output of each voltage controlled amplifier to generate the first output signal.

9. The source dependent instrument signal processing and signal generation system of claim 8, wherein there is a control interface for operating the system, and wherein the controller is coupled to each of the bank of filters, the set of envelope generators, the set of oscillators, the set of signal controlled amplifiers, and the control interface.

10. The source dependent instrument signal processing and signal generation system of claim 7, wherein the non-auditory event is comprised of at least one of (i) a temperature change in the environment, and the additional input signal parameters include a temperature change parameter, (ii) a humidity change in the environment, and the additional input signal parameters include a humidity change parameter, and (iii) a light change in the environment, and the additional input signal parameters include a light change parameter.

11. The source dependent instrument signal processing and signal generation system of claim 1, wherein the quasi-indeterminate sound is generated by a plurality of people.

12. The source dependent instrument signal processing and signal generation system of claim 1, wherein the first output signal is one of an analog and a digital signal, and the system further comprises means for feeding back the first output signal to at least one of the processor and an output stage.

13. A method of source dependent instrument signal processing and signal generation for a source dependent instrument which produces musical sounds, the method comprising the steps of:

generating an input signal in response to and representative of an audible input event occurring in an environment external to the source dependent instrument and having input signal parameters, the audible input event comprising a quasi-indeterminate sound generated by at least one of (i) another sound source other than sound outputted by the source dependent instrument, and (ii) a plurality of people, and the input signal parameters including an audio parameter of the plurality of people;

at least one of re-synthesizing the input signal and shifting parameters of the input signal and providing a first output signal having output parameters shifted in relation to and based on and responsive to the input signal parameters;

generating a second output signal responsive to the first output signal;

controlling at least one of the re-synthesizing and parameter shifting of the processor using a controller further comprising a step of feeding the second output signal back to the environment, wherein the environment is external to the source dependent instrument and a source dependant signal processing and signal generation system; and

feeding the first output signal back to an input transducer through at least one feedback signal line.

14. The method of claim 13, wherein in the step of at least one of re-synthesizing and providing, the second output signal comprises musical sounds.

15. The method of claim 13, wherein in the step of at least one of re-synthesizing and shifting, the input signal is re-synthesized and the parameters are shifted.

16. The method of claim 15, wherein in the step of at least one of re-synthesizing and shifting, the input signal is input from an audio interface to analysis elements as an audio signal and then output to function generators and signal generators, and the function generators output a signal to signal processing elements, and there is also a step of the signal generators providing an audio output signal to the signal processing elements, and a step of feeding the input signal from the audio interface to the signal processing elements, and a step of the signal processing elements outputting a signal processed audio signal as an initial output for the step of feeding the first output signal back to the environment, and as the initial output for a step of feeding the first output signal to the audio interface, and there is a step of amplifying and transducing the signal processed audio signal and outputting acoustic sounds to the environment.

17. The method of claim 13, wherein in the step of generating an input signal, the quasi-indeterminate sound is generated by a plurality of people.

18. A source dependent instrument signal processing and signal generation system for a source dependent instrument which produces musical sounds, comprising:

an input transducer for generating an input signal in response to and representative of an input event including an audible input event occurring in an environment external to the source dependent instrument signal processing and signal generation system;

an environment for providing an audible input event from which to generate audible input signals to an audio input interface, the audible input event comprising a quasi-indeterminate sound generated by at least one of (i) another sound source other than sound outputted by the source dependent instrument signal processing and signal generation system, and (ii) a plurality of people, and input signal parameters including an audio parameter of the plurality of people;

analysis elements for analyzing the input signals received from the audio input interface and outputting responsive signals to function generators and signal generators, wherein the signal generators generate audio signals;

signal processing elements receiving the output of the function generators and the audio signals output from the signal generators for producing signal processed audio output signals;

an initial feedback loop for feeding back the signal processed audio output signals to the audio input interface through feedback signal lines that are coupled to the audio input interface;

an additional feedback loop for feeding back output of the initial feedback loop to the environment; and

amplifying and output transducers receiving the signal processed audio output of the signal processors for amplifying the signal processed output and producing acoustic signals to the environment and to a controller connected to the audio input interface, the analysis elements, the function generators, the signal generators, the initial feedback loop, and the amplifying and output transducers.

19. The source dependent instrument signal processing and signal generation system of claim 18, wherein the source dependent instrument signal processing and signal generation system receives input signals via the internet.