Phoneme recognition and difference signal for speech coding/deco

Details Phoneme recognition and difference signal for speech coding/deco Phoneme recognition and difference signal for speech coding/deco

1997-04-10

1998-11-03

Knepper, David D.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704254, G10L 302

Patent

active

058324259

ABSTRACT:
An analog-to-digital converter (20) forms a digital signal based upon an analog speech signal. A phoneme parser (22) parses the digital signal into at least one phoneme. A phoneme recognizer (24) assigns a symbolic code to each phoneme based upon recognition of the phonemes from a predetermined set. A read-only memory (34) contains a standard waveform representation of each phoneme from the predetermined set. A difference processor (32) forms a difference signal between a user-spoken phoneme waveform and a corresponding waveform from the read-only memory (34). The difference signal is stored in a storage device (40). A multiplexer (30) provides a bit stream signal based upon the symbolic code and the difference signal. A synchronizer (70) extracts the symbolic code and the difference signal from the bit stream. A phoneme generator (76) forms the speech signal based upon the symbolic code and the difference signal.

REFERENCES:
patent: 4718087 (1988-01-01), Rapamichalis
patent: 4799261 (1989-01-01), Lin et al.
patent: 4802223 (1989-01-01), Lin et al.
patent: 5027404 (1991-06-01), Taguchi
patent: 5056143 (1991-10-01), Taguchi
patent: 5432884 (1995-07-01), Kapanen et al.

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