주파수 차감법을 이용한 음향 궤환 제거

Acoustic Feedback Cancellation Using Spectral Subtraction

An acoustic feedback canceller has some problems that are difficult to remove the acoustic feedback through acoustic feedback path. In this paper, a new method of acoustic feedback cancellation scheme is proposed using spectral subtraction. Microphone input signals are subtracted by estimated feedback signals which are estimated by Wiener filter using the correlation between microphone input signals and output signals of receiver.