Method and system for transmitting digital audio signals from recording studios to the various master stations of a broadcasting network
First Claim
1. A method of transmitting digital audio signals from recording studios to various master stations of a broadcasting network, comprising the steps of:
- initially reducing data flow of the digital audio signals to be transmitted in accordance with a technique utilizing a psychoacoustic phenomena of the human ear so as to create data-reduced audio signals;
respectively coding in a baseband in accordance with a DS1 (Digital Satellite) technique a first plurality of said data-reduced digital audio signals and outputting a first DS1/M signal composed of the first plurality of data-reduced digital audio signals;
respectively coding in a baseband in accordance with the DS1 a second plurality of said data-reduced digital audio signals and outputting a second DS1/M signal composed of the second plurality of data-reduced digital audio signals;
transmitting to the various master stations of the broadcasting network the at least first and second DS1/M signals in accordance with a DSR (Digital Satellite Radio) technique by means of a wide-band transmission system, and wherein the at least first and second DS1/M signals modulate a DSR 4-PSK modulator of a transmitting station enabling a simultaneous transmission and a subsequent simultaneous recovery of the original digital audio signals at a respective receiver for simultaneous presentation of the digital audio signals at the master stations of the broadcast network.
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Abstract
For the purpose of transmitting digital audio signals from recording studios to the various broadcasting stations of a broadcasting network, the data flow of the digital audio signals to be transmitted is initially reduced in accordance with a technique which utilizes the psychoacoustic phenomena of the human ear. Then groups of these data-reduced digital audio signals are respectively encoded in a baseband in accordance with a DS1-technique and combined to form respective DS1/M-signals. Finally, the thus produced DS1/M-signals are transmitted in accordance with the DSR technique by use of a wide-band transmission system to the individual broadcasting stations of the broadcasting network.
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Citations
14 Claims
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1. A method of transmitting digital audio signals from recording studios to various master stations of a broadcasting network, comprising the steps of:
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initially reducing data flow of the digital audio signals to be transmitted in accordance with a technique utilizing a psychoacoustic phenomena of the human ear so as to create data-reduced audio signals; respectively coding in a baseband in accordance with a DS1 (Digital Satellite) technique a first plurality of said data-reduced digital audio signals and outputting a first DS1/M signal composed of the first plurality of data-reduced digital audio signals; respectively coding in a baseband in accordance with the DS1 a second plurality of said data-reduced digital audio signals and outputting a second DS1/M signal composed of the second plurality of data-reduced digital audio signals; transmitting to the various master stations of the broadcasting network the at least first and second DS1/M signals in accordance with a DSR (Digital Satellite Radio) technique by means of a wide-band transmission system, and wherein the at least first and second DS1/M signals modulate a DSR 4-PSK modulator of a transmitting station enabling a simultaneous transmission and a subsequent simultaneous recovery of the original digital audio signals at a respective receiver for simultaneous presentation of the digital audio signals at the master stations of the broadcast network. - View Dependent Claims (2, 3, 4)
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5. A method of transmitting digital audio signals from recording studios to various master stations of a broadcasting network, comprising the steps of:
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initially reducing data flow of the digital audio signals to be transmitted in accordance with a technique utilizing a psychoacoustic phenomena of the human ear so as to create 16 groups of data-reduced audio signals, each group comprising a plurality of said data reduced digital audio signals; respectively coding in accordance with the DS1 (Digital Satellite) technique 16 groups of said data-reduced digital audio signals and outputting respective DS1/M signals composed of the respective groups of data-reduced digital audio signals; and transmitting to the various master stations of the broadcasting network the thus produced DS1/M signals in accordance with a DSR technique by means of a wide-band transmission system, and wherein the at least one DS1/M signals modulate a DSR (Digital Satellite Radio) 4-PSK modulator at a transmitting station enabling a simultaneous transmission and a subsequent simultaneous recovery of the original digital audio signals at a respective receiver for simultaneous presentation of the digital audio signals at the master stations of the broadcast network.
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6. A system for transmitting digital audio signals from recording studios to various master stations of a broadcasting network, comprising:
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a wide-band transmission link between the recording studios and the various master stations of the broadcasting network; at a transmitting station of said wide-band transmission link a DSR (Digital Satellite Radio) multiplexer with a four-PSK modulator having its output coupled to the wide-band transmission link and having a plurality of inputs coupled to respective DS1(Digital Satellite) coders; inputs of each of the DS1 coders being coupled to a respective plurality of coder means to which the digital audio signals to be transmitted are fed, said coder means each reducing a data flow of the respective digital audio signal in accordance with a technique which utilizes psychoacoustic phenomena of the human ear so that respective data-reduced audio signals are coupled to the respective DS1 coders, said 4-PSK modulator modulating a transmitter of said transmission link enabling a simultaneous transmission of the audio signals which permits a subsequent simultaneous recovery of the original digital audio signals at a respective receiver for simultaneous presentation of the digital audio signals at the master stations of the broadcast network; and at a receiver side of said wide-band transmission link the master stations having a DSR decoder means for selecting a plurality of DS1/M'"'"' signals from the transmitted DS1/M signals, and a demultiplexer means for converting the selected DS1/M'"'"' signals to the original data-reduced digital audio signals. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A system for transmitting digital audio signals from recording studios to various master stations of a broadcasting network, comprising:
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a wide-band transmission link between the recording studios and the various master stations of the broadcasting network; at a source side of said wide-band transmission link a DSR (Digital Satellite Radio) multiplexer with a four-PSK modulator having its output coupled to the wide-band transmission link and having a plurality of inputs coupled to respective DS1(Digital Satellite) coders; inputs of each of the DS1 coders being coupled to a respective plurality of coder means to which the digital audio signals to be transmitted are fed, said coder means each reducing a data flow of the respective digital audio signal in accordance with a technique which utilizes psychoacoustic phenomena of the human ear so that respective data-reduced audio signals are coupled to the respective DS1 coders, said 4-PSK modulator modulating a transmitter of said transmission link enabling a simultaneous transmission of the audio signals which permits a subsequent simultaneous recovery of the original digital audio signals at a respective receiver for simultaneous presentation of the digital audio signals at the master stations of the broadcast network; at said source side said DSR multiplexer having some of its inputs connected to receive said DS1/M signals from said respective DS1 coders and other of said inputs connected to receive non-data-reduced DS1 signals; and at a receiver side of said wide-band transmission link the master stations having a DSR decoder means for selecting a plurality of DS1/M'"'"' signals from the transmitted DS1/M signals, and a demultiplexer means for converting the selected DS1/M'"'"' signals to the original data-reduced digital audio signals.
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13. A system for transmitting digital audio signals from recording studios to various master stations of a broadcasting network, comprising:
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means for data-reducing a plurality of digital audio signals in accordance with a technique utilizing a psychoacoustic phenomena of the human ear in order to produce respective groups of data-reduced audio signals, each group comprising a plurality of said data-reduced audio signals; means for coding said respective data-reduced digital audio signals in accordance with a DS1 (Digital satellite) technique and outputting a plurality of DS1/M signals each composed of the respective groups of data-reduced digital audio signals; and means for transmitting the plurality of DS1/M signals in accordance with DSR (Digital Satellite Radio) technique by means of a wideband transmission system to the various master stations of the broadcasting network, said means for transmitting having a modulator means and wherein said DS1/M signal modulates said modulator means enabling a simultaneous transmission permitting a subsequent simultaneous recovery of the original digital audio signals at a respective receiver for simultaneous presentation of the digital audio signals at the master stations of the broadcast network. - View Dependent Claims (14)
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Specification