INTERFERENCE SUPPRESSION TECHNIQUES

摘要

System (10) is disclosed including an acoustic sensor array (20) coupled toprocessor (42). System (10) processes inputs from array (20) to extract adesired acoustic signal through the suppression of interfering signals. Theextraction/suppression is performed by modifying the array (20) inputs in thefrequency domain with weights selected to minimize variance of the resultingoutput signal while maintaining unity gain of signals received in thedirection of the desired acoustic signal. System (10) may be utilized inhearing aids, voice input devices, surveillance devices, and otherapplications.