perception of rise/fall times ("Dennis P. Phillips, Ph.D." )

Subject: perception of rise/fall times
From:    "Dennis P. Phillips, Ph.D."  <ears(at)IS.DAL.CA>
Date:    Fri, 4 May 2001 11:15:37 -0400

Hi Everyone: Are there published data on the similarities and/or differences between the percepts aroused by rise times and fall times (of tonal or other signals)? I'm not so much interested in increment and decrement thresholds per se, as I am in discrimination of the shape (e.g., linear, cosine) and slopes of the stimulus envelope. We have the article by van Heuven & van den Broecke (JASA, 1979, 66: 1308-1315). We also have the paper by Cutting & Rosner (P&P, 1974, 16: 564-570). We're currently searching the literature for people who've cited those articles. I would have thought that forward masking effects would have introduced asymmetries in the perception of rise and fall envelopes. Is this not true? Parenthetically, we are aware of much of the literature on the neural coding of stimulus transients. Thanks very much for any help or guidance you can offer. Best wishes from beautiful and sunny Nova Scotia. Cheers, Dennis Phillips ----------------------------------- Dennis P. Phillips, Ph.D. Hearing Research Laboratory Professor, Department of Psychology Dalhousie University Halifax, NS, Canada B3H 4J1 Phone: (902)494-2383 Fax: (902)494-6585 E-mail: ears(at) -----------------------------------

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