Non-speech content for low rate CELP decoder
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United States of America Patent
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Feb 2, 2016
Grant Date -
May 16, 2013
app pub date -
Nov 2, 2012
filing date -
Nov 3, 2011
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Abstract
A method and device for modifying a synthesis of a time-domain excitation decoded by a time-domain decoder, wherein the synthesis of the decoded time-domain excitation is classified into one of a number of categories. The decoded time-domain excitation is converted into a frequency-domain excitation, and the frequency-domain excitation is modified as a function of the category in which the synthesis of the decoded time-domain excitation is classified. The modified frequency-domain excitation is converted into a modified time-domain excitation, and a synthesis filter is supplied with the modified time-domain excitation to produce a modified synthesis of the decoded time-domain excitation.
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