Patent ID: 7092532
Filing Date: 2006-08-15
Classification: H04R

Abstract:
1. An audio system for receiving a time domain input signal having an input frequency spectrum and for providing a time domain output signal, said audio system being adapted to remove a feedback condition within said time domain input signal, said system comprising: a) an analysis unit for receiving said time domain input signal and providing N bandpass input signals, each of said bandpass input signals corresponding to a portion of said input frequency spectrum, and wherein N is a positive integer; b) an adaptive feedback cancellation unit coupled to said analysis unit for receiving said N bandpass input signals and providing N bandpass output signals, said adaptive feedback cancellation unit comprising N sub-units, wherein at least one sub-unit is adapted to cancel feedback, the at least one sub-unit including: c) a synthesis unit for receiving said N bandpass output signals and for providing said time domain output signal.