Determination of an excitation vector in CELP encoder

Details Determination of an excitation vector in CELP encoder Determination of an excitation vector in CELP encoder

1996-03-22

1998-02-17

MacDonald, Allen R.

395 228, 395 229, 395 271, 395 273, G10L 302

Patent

active

057199949

ABSTRACT:
The present invention relates to a method for determining an excitation vector in a CELP speech signal encoder, said vector belonging to a subset associated with a larger set of excitation vectors likely to maximize a criterion. The method includes the steps of preselecting an excitation vector having as components those with the same sign as corresponding samples of a target vector and, if the preselected excitation vector does not belong to said subset, selecting as an excitation vector the vector which maximizes said criterion among the vectors of the subset which are respectively associated with the preselected vector and with the vectors closest to it in the larger set.

REFERENCES:
patent: 5138661 (1992-08-01), Zinser et al.

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