Subject: Re: phoneme recognition and stimulus length From: Jont Allen <jba(at)RESEARCH.ATT.COM> Date: Mon, 19 Mar 2001 15:23:47 -0500T=F3th L=E1szl=F3 wrote: > On Mon, 19 Mar 2001, Jont Allen wrote: > > > I dont know if this is what you are getting at, but have you looked a= t the > > paper by Sadaoki Furui "On the role of spectral transitions for speec= h perception." > > JASA, Oct. 1986, page 1016+ > > > It partly answers my questions, as they used truncated syllables as > stimuli. But I would be more interested in the other direction: > is there any additional gain in recognition performace if we use stimul= i > LONGER than a syllable? As I mentioned last month, the work of Cyma Van Petten (JASA, page 2643, Nove 2000, #5, pt 2, vol 108) is relevant here. She showed that there is = a point in time where you resolve the word/sound, and that adding more time or so= und does very little to the score. At least that is how I remember what she s= aid. If you search for her name with google you will find her home page with references. This is a large body of work. The title of her paper at ASA i= s "Time course of word id adn semantic integration in spoken language." Jont > What made me wonder about this is the "backwards recognition masking" > experiments of Massaro (unfortunately, I don't have the original papers= , > only a half-page review in a Ph.D. thesis by Brian Kingsbury). Their > results say that masking has no effect if the target is longer than a > syllable or if there is at least a syllable-long silent interval betwee= n > the target and the masker. I would > need a reinforcement of these results, but possibly from the opposite > direction (i.e. not how recognition deteriorates from backwards masking > but how recognition improves from "forward helping" - so to say). > > Laszlo Toth > Hungarian Academy of Sciences * > Research Group on Artificial Intelligence * "Failure only begins > e-mail: tothl(at)inf.u-szeged.hu * when you stop trying= " > http://www.inf.u-szeged.hu/~tothl * -- Jont B. Allen AT&T Labs-Research, Shannon Laboratory, E161 180 Park Ave., Florham Park NJ, 07932-0971 973/360-8545voice, x7111fax, http://www.research.att.com/~jba