APPARATUS AND METHOD FOR ERROR CONCEALMENT IN LOW-DELAY UNIFIED SPEECH AND AUDIO CODING (USAC)
摘要
An apparatus (100) for generating spectral replacement values for an audio signal is provided. The apparatus (100) comprises a buffer unit (110) for storing previous spectral values relating to a previously received error-free audio frame. Moreover, the apparatus (100) comprises a concealment frame generator (120) 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 comprises filter information, the filter information having associated a filter stability value indicating a stability of a prediction filter. The concealment frame generator (120) is adapted to generate the spectral replacement values based on the previous spectral values and based on the filter stability value.
申请公布号
WO2012110447(A1)
申请公布日期
2012.08.23
申请号
WO2012EP52395
申请日期
2012.02.13
申请人
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.;LECOMTE, JEREMIE;DIETZ, MARTIN;SCHNABEL, MICHAEL;SPERSCHNEIDER, RALPH
发明人
LECOMTE, JEREMIE;DIETZ, MARTIN;SCHNABEL, MICHAEL;SPERSCHNEIDER, RALPH