Apparatus for processing an encoded signal, the encoded signal comprising an encoded audio signal having information on a pitch delay, a pitch gain, and a bass post-filter control parameter, comprising: an audio signal decoder for decoding the encoded audio signal using the information on the pitch delay or the pitch gain to obtain a decoded audio signal; a controllable bass post-filter for filtering the decoded audio signal to obtain a processed signal, wherein the controllable bass post-filter has a variable bass post-filter characteristic controllable by the bass post-filter control parameter; and a controller for setting the variable bass post-filter characteristic in accordance with the bass post-filter control parameter included 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 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 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 to retrieve the quantized gain value from the encoded signal to obtain the bass post-filter control parameter, to scale the pitch gain by a constant factor lower than 1 and greater than 0 to obtain a scaled pitch gain; and to calculate a setting of the gain stage using the scaled pitch gain and using the quantized gain value. an audio signal decoder for decoding the encoded audio signal using the information on the pitch delay or the pitch gain to obtain a decoded audio signal; a controllable bass post-filter for filtering the decoded audio signal to obtain a processed signal, wherein the controllable bass post-filter has a variable bass post-filter characteristic controllable by the bass post-filter control parameter; and a controller for setting the variable bass post-filter characteristic in accordance with the bass post-filter control parameter included 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 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 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 to retrieve the quantized gain value from the encoded signal to obtain the bass post-filter control parameter, to scale the pitch gain by a constant factor lower than 1 and greater than 0 to obtain a scaled pitch gain; and to calculate a setting of the gain stage using the scaled pitch gain and using the quantized gain value.