Speech coding method and apparatus using mean squared error modi

Details Speech coding method and apparatus using mean squared error modi Speech coding method and apparatus using mean squared error modi

1995-11-20

1997-11-25

MacDonald, Allen R.

395 228, 395 234, 395 232, 395 239, G10L 914

Patent

active

056921012

ABSTRACT:
An improved speech coder provides a more natural sounding replication of speech by modifying the mean-squared error criterion for the selected speech coder parameters. Specifically, the modification emphasizes the signal components that the speech coder has difficulty matching, i.e. the high frequencies. This emphasis is constrained to certain limitations to avoid over-emphasizing the speech.

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Gerson et al., ("Vector Sum Excited Linear Prediction (VSELP) Speech Codingat 8 KBPS", ICASSP '90: Acoustics, Speech & Signal Processing Conference, Feb. 1990, pp. 461-464).

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