AUDIO ENCODER, AUDIO DECODER AND AUDIO PROCESSOR HAVING A DYNAMICALLY VARIABLE WARPING CHARACTERISTIC

摘要

An audio encoder, an audio decoder or an audio processor includes a filte r (12) for generating a filtered audio signal, the filter having a variable warping characteristic, the characteristic being controllable in response to a time-varying control signal (16), the control signal indicating a small o r no warping characteristic or a comparatively high warping characteristic. Furthermore, a controller (18) is connected for providing the time-varying c ontrol signal, which depends on the audio signal. The filtered audio signal can be introduced to an encoding processor (22) having different encoding al gorithms, one of which is a coding algorithm adapted to a specific signal pa ttern. Alternatively, the filter is a post-filter receiving a decoded audio signal.