Subject: equal auditory steps along F1/F2 From: Daniel Levitin <levitin@xxxxxxxx> Date: Wed, 17 May 2006 09:41:07 -0400Heriberto, This is a worthwhile question, but I don't know of an answer. Malcolm Slaney, Perry Cook, Roger Shepard, Al Bregman and I have been working together on this and related questions for the better part of 12 years now. I think the most defensible position is to base any decision you make on empirical data. Our experience is that the distances are highly dependent on the paradigm you use (the question you ask, the way you present the stimuli, the subjects' task). I would advise then that you just make a good guess, perhaps equal distances in log space for starters, collect your data, and adjust accordingly. I'm sure that the list members will be interested to see what you find (as will I!). Dan Levitin > >Date: Mon, 15 May 2006 22:20:43 -0700 >From: Heriberto Avelino <avelino@xxxxxxxx> >Subject: equal auditory steps along F1/F2 > >Dear List members, > >I am designing an experiment and I need to synthesize an array of vowels >separated by equal perceptual magnitudes. That is to say, I need vowels >that sample the acoustic vowel space in equal auditory steps along the >continua F1 and F2. >Furthermore, I would like to justify such a magnitude, instead of just >doing a Hz to ERB/MEL/Bark etc. conversion, for instance. >I would appreciate any comment and suggestions about the relevant >literature. > >Best regards, >Heriberto > >**************************************************** >'Life is short but wide' > >Heriberto Avelino Ph. D. >Department of Linguistics >1203 Dwinelle Hall, >University of California at Berkeley >Berkeley, CA 94720-2650 >Phone: (510) 642-2757 >Fax: (510) 643-5688 >http://www.linguistics.berkeley.edu/~avelino/ >**************************************************** >******** -- Daniel J. Levitin, Ph.D., Associate Professor Laboratory for Auditory Perception and Cognition Program in Behavioural Neuroscience Bell Chair in Psychology of Electronic Communication FCAR/FQRNT Strategic Chair in Psychology Associate, Department of Music Theory and Faculty of Music Mailing address: McGill University Department of Psychology 1205 Avenue Penfield Montreal, QC H3A 1B1 Phone: +1 (514) 398-8263 FAX: +1 (514) 398-4896 home page: http://www.psych.mcgill.ca/levitin.html http://www.mbns.ca