Voiced speech coding and decoding using phase-adapted single exc

Details Voiced speech coding and decoding using phase-adapted single exc Voiced speech coding and decoding using phase-adapted single exc

1996-06-27

1998-09-15

Dorvil, Richemond

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704219, 704263, G10L 908

Patent

active

058094563

ABSTRACT:
The present invention relates to a method and to equipment for coding and decoding a sampled speech signal. It belongs to systems used in speech processing, in particular for compression of speech information. The method is based upon a time/frequency description and on a representation of the prototype as a fundamental period of a periodic waveform; moreover the excitation of the synthesis filter is carried out through a single, phase-adapted pulse.

REFERENCES:
patent: 4908863 (1990-03-01), Taguchi et al.
patent: 5067158 (1991-11-01), Arjmand
patent: 5517595 (1996-05-01), Kleijn
"Method for waveform interpolation in speech coding" by W.B. Kleijn, Digital Signal Processing, pp. 215-230, Sep. 1991.(Cited twice).
"Code-Excited Linear Prediction (CELP); High Quality Speech at Very Low Bit Rates" Proceedings of the International Speech & Signal Processing,Schroeder et al 1985,pp. 937-940.
"Multiband Excitation Vocoder" by Griffin, et al. IEEE Transaction of Acoustic, Speech and Signal Processing, pp. 1223-1235, Aug. 1988.
"The Goverments Standard, Linear Predictive Coding Algorithm: LPC-10", Speech Technology, pp. 40-49, Apr. 1982. T. Tremain.
"Excitation Modelling Based on Speech Residual Information" by Lupini et al, Proc. Int'l Conference on Acoustic, Speech and Signal Processing, pp. 333-336, 1992.
Kluwer Academic Publishers. Gersho et al, "Vector Quantization and Signal Processing". pp. 110-111, 1992.

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