Subject: Re: Auditory wheel From: Martin Braun <nombraun@xxxxxxxx> Date: Fri, 19 Mar 2010 16:42:54 +0100 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Dear Michael, and others, all the problems with Shepard tones that you mentioned disappear at once and completely, if you take experimental subjects that have absolute pitch (APers). See below: > I considered Shepard tones in rhythm as well as Risset's variants in pitch. From a preliminary trial, it seemed difficult for subjects to determine consistent perceptual boundaries in the cycle. APers have perceptual boundaries that are as stable and as automatic as color boundaries in the general population. > We're interested where people innately segregate sensory inputs along the > wheel, be it in vision or audition. Exactly this is what APers do. > With color, these boundary determinations are quite repeatable. With > sound, Shepard tones seemed to make the problem quite difficult; it may > simply be, however, that subjects were given insufficient exposure. More exposure would not help. But with APers you will see that the boundaries will probably be even more precisely repeatable than with the color wheel. Good luck. Martin --------------------------------------------------------------------- Martin Braun Neuroscience of Music S-671 95 Klässbol Sweden email: nombraun@xxxxxxxx web site: http://www.neuroscience-of-music.se/index.htm Subject: Re: Auditory wheel From: "Michael H. Coen" <mhcoen@xxxxxxxx> Date: Thu, 18 Mar 2010 19:17:36 -0500 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>