Digital speech coder and method utilizing harmonic noise weighti

Details Digital speech coder and method utilizing harmonic noise weighti Digital speech coder and method utilizing harmonic noise weighti

1994-09-07

1996-06-18

Knepper, David D.

395 216, 395 218, G10L 302

Patent

active

055287239

ABSTRACT:
A digital speech coder utilizes harmonic noise weighting to overcome some limitations of low-rate CELP-type speech coders in reproducing voiced speech. In addition to a short term correction factor, which constitutes spectral noise weighting as known in the art, a long term pitch correction factor is utilized to provide harmonic noise weighting. The inclusion of harmonic noise weighting in a speech coder more efficiently utilizes noise-masking properties of a speech signal, allowing synthesis of a higher quality speech at a given bit rate.

REFERENCES:
patent: 4817157 (1989-03-01), Gerson
patent: 4868867 (1989-09-01), Davidson et al.
patent: 4896361 (1990-01-01), Gerson
patent: 4945565 (1990-07-01), Dzawa et al.
patent: 5027405 (1991-06-01), Dzawa
Lee et al., "On Reducing Computational Complexity of Codebook Search in CELP Coding," IEEE Trans on Communications, vol. 38, No. 11, Nov. 1990, pp. 1935-1937.

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