Speech coding system utilizing a recursive computation technique

Details Speech coding system utilizing a recursive computation technique Speech coding system utilizing a recursive computation technique

1990-10-17

1993-07-20

Fleming, Michael R.

G10L 900

Patent

active

052300366

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 et al.
Proc. IEEE ICASSP87.31.9; "Speech Coding Using Efficient Psedo-Stochastic Block Codes"; Daniel Lin; 1987, pp. 1354-1357.

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