Coding And Decocidng Of Pulse And Residual Parts Of An Audio Signal

Abstract: The present invention relates to an audio encoder (100, 101) for encoding an audio signal (PCMi) comprising an pulse portion (P) and a stationary portion, comprising: a pulse extractor (11,110) configured for extracting the pulse portion (P) from the audio signal (PCMi), further comprising a pulse coder (132) for encoding the extracted pulse portion (P) to acquire an encoded pulse portion (CP); wherein the pulse extractor (110) is configured to determine a spectrogram of the audio signal (PCMi) to extract the pulse portion (P), wherein the spectrogram has higher time resolution than the signal encoder (152, 156'); a signal encoder (152, 156') configured for encoding a residual (R) signal derived from the audio signal (PCMi) to acquire an encoded residual (CR) signal, the residual (R) signal being derived from the audio signal (PCMi) so that the pulse portion (P) is reduced or eliminated from the audio signal (PCMi); and an output interface (170) configured for outputting the encoded pulse portion (CP) and the encoded residual (CR) signal to provide an encoded signal.

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