Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Patent
1995-07-19
2000-04-04
Dorvil, Richemond
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
704219, G10L 900
Patent
active
RE0366463
ABSTRACT:
This invention provides a novel speech coding system which recursively executes a filter-applied "Toeplitz characteristic" by causing a drive signal (i.e., an excitation signal) to be converted into a "Toeplitz matrix" when detecting a pitch period in which distortion of the input vector and the vector subsequent to the application of filter-applied computation to the drive signal vector in the pitch forecast called either "closed loop" or "compatible code book" is minimized. The vector quantization method substantially making up the speech coding system of the invention is characteristically used by the system.
REFERENCES:
patent: 4899385 (1990-02-01), Ketchum et al.
patent: 4932061 (1990-06-01), Kroon et al.
patent: 4944013 (1990-07-01), Gouvianakis
Proc. IEEE ICASSP-87.31.9; Daniel Lin, "Speech coding using pseudo-stochastic blok codes"; pp. 1354-1357, Sep. 1987.
Akamine Masami
Miseki Kimio
Okuda Yuji
Dorvil Richemond
Kabushiki Kaisha Toshiba
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