System for an adaptive excitation pattern for speech coding

Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission

Reexamination Certificate

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C704S219000, C704S224000

Reexamination Certificate

active

07133823

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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