Apparatus and method for error concealment in low-delay unified speech and audio coding
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United States of America Patent
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Jul 5, 2016
Grant Date -
Dec 12, 2013
app pub date -
Aug 14, 2013
filing date -
Feb 14, 2011
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Abstract
An apparatus for generating spectral replacement values for an audio signal has a buffer unit for storing previous spectral values relating to a previously received error-free audio frame. Moreover, the apparatus includes a concealment frame generator for generating the spectral replacement values, when a current audio frame has not been received or is erroneous. The previously received error-free audio frame has filter information, the filter information having associated a filter stability value indicating a stability of a prediction filter. The concealment frame generator is adapted to generate the spectral replacement values based on the previous spectral values and based on the filter stability value.
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