Patent ID: 7274794

Claim:
An audio processor for a sound processing system comprising a plurality of microphones and an output device, wherein the plurality of microphones is configured to convert a wave into a plurality of electrical signals, the audio processor comprising: a first analysis filter coupled to at least one microphone in the plurality of microphones, the first analysis filter being configured to filter at least one electrical signal in the plurality of electrical signals to provide a filtered electrical signal; a wave parameter estimator coupled to the first analysis filter and the plurality of microphones, the wave parameter estimator being configured to analyze the filtered electrical signal and the plurality of electrical signals in first and second frequency sub-bands to provide first and second estimates of a parameter of the wave, the first estimate being associated with the first frequency sub-band and the second estimate being associated with the second frequency sub-band; and a forward filter coupled to the wave parameter estimator and at least one microphone in the plurality of microphones, the forward filter being configured to filter at least one electrical signal in the plurality of electrical signals, the forward filter having a response based on the first and second estimates.