Talk WHAT: Alain de Cheveigne (IRCAM, Paris): "The Cancellation Principle in Acoustic Scene Analysis" WHEN: Monday March 29, 11:00 AM EST WHERE: Rothschild Room, MIT Media Lab (E15-283), Second Floor HOSTED BY: Professor Barry Vercoe SUMMARY: Cancellation is a process by which an interfering source ("jammer") is removed from a mixture of sounds on the basis of its structure. This is part of the task of "scene analysis" that confronts natural organisms and artificial devices. Jammer cancellation is distinct from, and complementary to, target enhancement. Time-domain cancellation filters are distinct from, and complementary to, time-frequency analysis. The cancellation principle is probably used by the auditory system to analyze acoustic scenes on the basis of the spatial or harmonic structure of interfering sources. It is related to modern techniques such as ICA (Independent Components Analysis). BIO: Alain de Cheveigne is on the research staff of IRCAM (Institute for Research and Coordination of Acoustics and Music) in Paris, where he works on hearing (pitch perception and auditory scene analysis) and speech processing (frequency estimation and multi-voice source separation). He previously worked in the Human Information Processing Research Labs at ATR in Japan. In Paris, de Cheveigne is a member of IRCAM's Perception et Cognition Musicale group, where his work is supported by CNRS. MIT Media Laboratory Home Page | Events Main Index