Audio signal processing method and device
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United States of America Patent
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Apr 28, 2015
Grant Date -
Sep 20, 2012
app pub date -
Nov 24, 2010
filing date -
Nov 24, 2009
priority date (Note) -
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Abstract
Disclosed is an audio signal processing method comprising the steps of: receiving an audio signal containing current frame data; generating a first temporary output signal for the current frame when an error occurs in the current frame data, by carrying out frame error concealment with respect to the current frame data a random codebook; generating a parameter by carrying out one or more of short-term prediction, long-term prediction and a fixed codebook search based on the first temporary output signal; and memory updating the parameter for the next frame; wherein the parameter comprises one or more of pitch gain, pitch delay, fixed codebook gain and a fixed codebook.
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