System for an adaptive excitation pattern for speech coding
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United States of America Patent
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Nov 7, 2006
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app pub date -
Jan 16, 2001
filing date -
Sep 15, 2000
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Abstract
There are provided short term enhancement methods and systems to improve perceptual quality in reproduced speech. According to one aspect, a method of enhancing a speech signal includes processing said speech signal to generate a plurality of frames, wherein each of said plurality frames includes a plurality of subframes, coding a previous subframe of said plurality of subframes using Code-Excited Linear Prediction to generate a previous excitation signal, and applying short term enhancement on said previous excitation signal to enhance a current excitation signal for a current subframe.
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