Patent 7797153 was granted and assigned to Sony on September, 2010 by the United States Patent and Trademark Office.
A speech signal separation apparatus for separating an observation signal in a time domain of a plurality of channels wherein a plurality of signals having a speech signal are mixed using independent component analysis to produce a plurality of separation signals of the different channels, including: a first conversion section, a non-correlating section, a separation section, and a second conversion section.