Apparatus for the linear predictive coding of human speech

Details Apparatus for the linear predictive coding of human speech Apparatus for the linear predictive coding of human speech

1980-11-28

1983-08-30

Rubinson, G. Z.

179 1SA, G10L 106

Patent

active

044018550

ABSTRACT:
Improved apparatus for the linear predictive coding of human speech in which the speech is sampled through the use of analog filters and the linear predictive coding computations are performed with respect to such samples using digital techniques. The filters are MOS switched capacitor filters which can be implemented on a silicon chip together with the digital circuitry. Specific circuits for implementing two different linear predictive coding speech analysis techniques are disclosed.

REFERENCES:
patent: 3662115 (1972-05-01), Saito et al.
patent: 4052563 (1977-10-01), Noda et al.
patent: 4184049 (1980-01-01), Crochiere et al.
patent: 4209844 (1980-06-01), Brantingham et al.
IEEE Journal of Solid-State Circuits, vol. SC-14, No. 6, Dec. 1979: pp. 961-969, "A Two Chip PCM Voice CODEC with Filters", by Hague et al.; pp. 970-980, CMOS Switched-Capacitor Filters for a PCM Voice CODEC, by Gregorian et al.; pp. 981-991, A Single-Chip NMOS Dual Channel Filter for Telephony Applications, by Gray et al.
Wiggins, Richard; An Integrated Circuit for Speech Synthesis; Conference: ICASSP 80 Proceedings, IEEE International Conference on Accoustics Speech and Signal Processing; 4/11/80.

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