Patent ID: 9640191
Date: 2017-05-02
CPC Classifications: G10L

Claim:
1. An apparatus for processing an encoded signal, the encoded signal comprising an encoded audio signal comprising information on a pitch delay, a pitch gain, and a bass post-filter control parameter, comprising: an audio signal decoder configured for decoding the encoded audio signal using the information on the pitch delay or the pitch gain to acquire a decoded audio signal; a controllable bass post-filter configured for filtering the decoded audio signal to acquire a processed signal, wherein the controllable bass post-filter comprises a variable bass post-filter characteristic controllable by the bass post-filter control parameter; and a controller configured for setting the variable bass post-filter characteristic in accordance with the bass post-filter control parameter comprised in the encoded signal, wherein the controllable bass post-filter comprises a filter apparatus comprising a long-term prediction filter, a gain stage, a signal manipulator, and a subtractor configured for subtracting an output of the filter apparatus from the decoded audio signal, wherein the bass post-filter control parameter comprises a quantized gain value for the gain stage, wherein the controller is configured to set the gain stage in accordance with the quantized gain value, wherein the controller comprises a block configured for decoding or retrieving the information on a pitch delay and wherein the controller is configured to set the long-term prediction filter in accordance with the pitch delay, wherein the controller is configured