Providing a time warp activation signal and encoding an audio signal therewith

摘要

Abstract An audio encoder for encoding an audio signal, comprising: a time warper for warping an audio signal using a variable time warping characteristic; a time/frequency converter for 5 converting a time warped audio signal into a spectral representation having a number of spectral coefficients; and a processor for processing a variable number of spectral coefficients to generate an encoded audio signal, wherein the processor is configured for variably setting a number of spectral coefficients for a frame of the audio signal based on the time warping characteristic for the frame so that a bandwidth variation represented by 10 the processed number of frequency coefficients from frame to frame is reduced or eliminated. Figure 5a -o o Ln C