September 22-25, 1997
Blind signal separation method based on minimiz- ing mutual information is applied to deal with multi- speaker problem in speech recognition. Recognition experiments performed under di erent acoustic environments, in a soundproof room and a reverberant room, clarify that 1) the method can improve recognition accuracy by about 20% where SNR condition is 0 dB, 2) the method is more effective when many speakers' speech exist than the simple overlapped situation, and that 3) the method does not work well under reverberant conditions.
Bibliographic reference. Taniguchi, Tomohiko / Kajita, Shoji / Takeda, Kazuya / Itakura, Fumitada (1997): "Voice activity detection using source separation techniques", In EUROSPEECH-1997, 1103-1106.