Device and method for quantizing the gains of the adaptive and fixed contributions of the excitation in a CELP codec
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United States of America Patent
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Apr 18, 2017
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Aug 11, 2014
filing date -
Feb 15, 2011
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Abstract
A device is for retrieving a quantized gain of a fixed contribution of an excitation in a sub-frame of a frame. The device includes a receiver of a gain codebook index; an estimator of the gain of the fixed contribution of the excitation in the sub-frame, wherein the estimator is supplied with a parameter representative of a classification of the frame; a gain codebook for supplying a correction factor in response to the gain codebook index; and a multiplier of the estimated gain by the correction factor to provide a quantized gain of the fixed contribution of the excitation in said sub-frame.
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