Error concealment unit using characteristics of the decoded representation of a properly decoded audio frame, an audio decoder and related methods and computer programs

摘要

An error concealment unit (100), method and computer program are provided for providing error concealment audio information (107) for concealing loss of audio frames in encoded audio information. In one embodiment, the error concealment unit provides error concealment speech information for the lost speech frame based on the speech frame properly decoded prior to the lost speech frame. The error concealment unit derives an attenuation factor (103) based on the characteristics of the decoded representation of the audio frame properly decoded prior to the lost audio frame. The error concealment unit performs fade out (104) using the attenuation factor (103). [Selected figure] Figure 1