Patent ID: 8812308

Claim:
Apparatus for modifying an input audio signal, comprising: an excitation determiner configured to determine a value of an excitation parameter of a subband of a plurality of subbands of the input audio signal based on an energy content of the subband, wherein the value of the excitation parameter indicates a power of the audio signal in the subband or a short time energy of the audio signal in the subband or a quantized value of the short time energy of the audio signal in the subband; a storage device storing a lookup table comprising a plurality of spectral weighting factors, wherein a spectral weighting factor of the plurality of spectral weighting factors is associated to a predefined value of the excitation parameter and a subband of the plurality of subbands, wherein the storage device is configured to provide a spectral weighting factor corresponding to the determined value of the excitation parameter and corresponding to the subband, the value of the excitation parameter is determined for; and a signal modifier configured to modify a content of the subband of the input audio signal, the value of the excitation parameter is determined for, based on the provided spectral weighting factor to provide a modified subband by multiplicative scaling of the subband of the audio signal by the spectral weighting factor provided by the lookup table.