upward vs. downward frequency changes (Wolfgang Ellermeier )


Subject: upward vs. downward frequency changes
From:    Wolfgang Ellermeier  <we(at)ACOUSTICS.DK>
Date:    Wed, 25 Sep 2002 13:47:29 +0200

Dear list, during the past couple of days I followed a discussion on "upward" vs. "downward" frequency glides. Let me just add yet another piece of psychophysical (behavioral) evidence: Using simple auditory reaction-time, David Emmerich and I found that people responded faster to upward than to downward frequency shifts (on the order of 4-20 Hz). In our discussion and through corroborative experiments, we interpreted this asymmetry within the framework of Zwicker's excitation-pattern model. For those interested, the reference is: Ellermeier, W. & Emmerich, D.S. (1993). Reaction times to unidirectional frequency changes: A test of Zwicker's excitation-pattern model. Journal of the Acoustical Society of America, 94(6), 3144-3152. Best, Wolfgang Ellermeier ___________________________________________________________ Wolfgang Ellermeier e-mail: we(at)acoustics.dk phone: +45 9635 8713 FAX: +45 9815 2144 Forskningsprofessor Research Professor Afdeling for Akustik Departm. of Acoustics Aalborg Universitet Aalborg University Fredrik Bajersvej 7 B4 Fredrik Bajersvej 7 B4 DK-9220 Aalborg DK-9220 Aalborg O Danmark Denmark _____________________________________________________________


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