Patent ID: 8255212

Claim:
A filter compressor for generating compressed subband filter impulse responses from input subband filter impulse responses corresponding to subbands, which comprise filter impulse response values at filter taps, comprising: a processor for examining the filter impulse response values from at least two input subband filter impulse responses to find filter impulse response values comprising higher values, and at least one filter impulse response value comprising a value being lower than the higher values; and a filter impulse response constructor for constructing the compressed subband filter impulse responses using the filter impulse response values comprising the higher values, wherein the filter impulse response constructor is configured to construct the compressed subband filter impulse responses so that the compressed subband filter impulse responses do not comprise filter impulse response values corresponding to filter taps of the at least one filter impulse response value comprising the lower value; or comprise zero-valued filter impulse response values corresponding to filter taps of the at least one filter impulse response value comprising the lower value.