Workshop on the Auditory Basis of Speech Perception Keele University, UK July 15-19, 1996

Direct Separation of Sounds Based on Knowledge of F0 and ITD

Frédéric Berthommier

Institut de la Communication Parlee/INPG, Grenoble, France

I address the question of source separation using low-level knowledge about signals. Assuming that we are able to well estimate characteristics of the signals, like fundamental frequency (f0) and interaural time differency (ITD), I show how to use these measures in order to directly recover the signal produced by a given source. This ideal f0-guided segregation process well works with quasi-stationary signals, with no or well-described f0 variations. It enables to recover periodic signals embedded in noise and to separate double-vowels. I discuss widely the place of this new algorithm in the context of auditory scene analysis (ASA).

Full Paper

Bibliographic reference.  Berthommier, Frédéric (1996): "Direct separation of sounds based on knowledge of F0 and ITD", In ABSP-1996, 170-173.