Subject: Re: your mail From: Al Bregman <bregman(at)HEBB.PSYCH.MCGILL.CA> Date: Mon, 9 Nov 1998 11:03:32 -0500Dear Laszlo and List, If detection and classiofication of voiced vs. unvoiced segments plays a central role in algorithmic speech recognition, and if this classification is based on distinguishing the pitched vs. noisy parts of the signal, then such algorithms wouldn't be able to understand whispered speech, which is an easy task for humans. So the voiced/unvoiced distinction must be capable of being made on some criteria other than pitched/noisy (maybe the presence or absence of strong low-frequency formants?). Any comments? - Al ---------------------------------------------------------------------- Albert S. Bregman, Professor, Dept of Psychology, McGill University 1205 Docteur Penfield Avenue, Montreal, Quebec, Canada H3A 1B1. Phone: +1 514-398-6103 Fax: -4896 Email: bregman(at)hebb.psych.mcgill.ca Lab Web Page: http://www.psych.mcgill.ca/labs/auditory/laboratory.html ---------------------------------------------------------------------- On Thu, 5 Nov 1998 tothl(at)INF.U-SZEGED.HU wrote: > Dear List, > > there is a vast literature on estimating pitch based on simulations of > auditory processing. However, there seems to be much less information about > how to discriminate pitched and not pitched (noise-like) parts of a signal. ... Email to AUDITORY should now be sent to AUDITORY(at)lists.mcgill.ca LISTSERV commands should be sent to listserv(at)lists.mcgill.ca Information is available on the WEB at http://www.mcgill.ca/cc/listserv