Estimating timing and channel distortion across related signals

We consider the situation where there are multiple audio sig-nals whose relationship is of interest. If these signals have been dif-ferently captured, the otherwise similar signals may be distorted by fixed filtering and/or unsynchronized timebases. Examples include recordings of signals before and after radio transmission and differ-ent versions of musical mixes obtained from CDs and vinyl LPs. We present techniques for estimating and correcting timing and channel differences across related signals. Our approach is evaluated in the context of artificially manipulated speech utterances and two source separation tasks