Toward blind removal of unwanted sound from orchestrated music

摘要

The problem addressed in this paper is to removing unwanted sounds from music sound. The sound to be removed could be distrubance such as cough. We shall present some preliminary results on this problem using statistical properties of signals. Our approach consists of three steps. We first sstimate the fundamental frequencies and we filter the noise-corrupted sound using the AR parameters. The filtered signal is then sutracted from the original nose-corrupted singal to get the disturbance. Finally, the obtained disturbance is used as reference signal to eliminate the disturbance from the nose-corrupted music signal. Above three steps are carried out in a recursive manner using a sliding window or an infinitely growing window with an appropariate forgetting factor.