Digital voice processing system
First Claim
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1. A digital voice processing system incorporating a complete vocoder algorithm and including means for converting audio signals to digital electrical signals comprising:
- (a) a first integrated circuit semiconductor chip including pitch extraction means connected to receive the digital electrical signals for providing a first plurality of signals representing a plurality of different audio characteristics;
(b) a second integrated circuit semiconductor chip including partial correlation voice analyzer means connected to receive the digital electrical signals for providing a plurality of signals representing a second plurality of different audio characteristics;
(c) a third integrated circuit semiconductor chip including partial correlation audio synthesizer means for receiving a plurality of signals representing different audio characteristics and synthesizing audio signals therefrom;
(d) transmission and receiving means;
(e) a fourth integrated circuit semiconductor chip including a microprocessor coupled to said transmission and reciving means; and
(f) means coupling the first and second pluralities of signals from said first and second chips to said fourth chip and coupling a plurality of signals representing different audio characteristics from said fourth chip to said third chip for duplex operation, the complete vocoder algorithm being partitioned among the first, second, third and fourth chips so that only low data rate signals are coupled by said coupling means.
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Abstract
A multiple rate voice processing system incorporating a complete linear predictive coding algorithm wherein the algorithm is partitioned among a plurality of integrated circuit chips so that all communications between chips occur at low data rates.
27 Citations
10 Claims
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1. A digital voice processing system incorporating a complete vocoder algorithm and including means for converting audio signals to digital electrical signals comprising:
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(a) a first integrated circuit semiconductor chip including pitch extraction means connected to receive the digital electrical signals for providing a first plurality of signals representing a plurality of different audio characteristics; (b) a second integrated circuit semiconductor chip including partial correlation voice analyzer means connected to receive the digital electrical signals for providing a plurality of signals representing a second plurality of different audio characteristics; (c) a third integrated circuit semiconductor chip including partial correlation audio synthesizer means for receiving a plurality of signals representing different audio characteristics and synthesizing audio signals therefrom; (d) transmission and receiving means; (e) a fourth integrated circuit semiconductor chip including a microprocessor coupled to said transmission and reciving means; and (f) means coupling the first and second pluralities of signals from said first and second chips to said fourth chip and coupling a plurality of signals representing different audio characteristics from said fourth chip to said third chip for duplex operation, the complete vocoder algorithm being partitioned among the first, second, third and fourth chips so that only low data rate signals are coupled by said coupling means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of manufacturing a digital voice processing system incorporating a complete vocoder algorithm for analyzing and synthesizing the audio to provide duplex operation including the steps of:
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(a) providing a plurality of integrated circuit semiconductor chips carrying circuitry for performing the vocoder algorithm; and (b) partitioning the vocoder algorithm among the chips so that all communication therebetween occurs at low data rates. - View Dependent Claims (9, 10)
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Specification