Re: roughness judgments (Reinhart Frosch )


Subject: Re: roughness judgments
From:    Reinhart Frosch  <reinifrosch(at)BLUEWIN.CH>
Date:    Sat, 25 Jun 2005 13:42:56 +0000

Dear Mrs. Tufts, In my one-man tests using sine-tones from a DX-11 synthesizer and "incomplete paired comparisons" (e.g., checking later whether two two-tones having received the same grade really are equally rough) I found that at a given frequency f1 of the deeper of the two beating sine-tones there is a broad maximum of roughness extending from beat rates of about 0.5-times-square-root-of-f1 to two-times-square-root-of-f1. Most of the published roughness data agree with "my" above-mentioned beat-rate range; a few published maximum-roughness beat-rates are above my range. The Helmholtz harmonic-complex-tone consonance theory works only for fairly low maximum-roughness-beat-rate values. Reinhart Frosch, CH-5200 Brugg. reinifrosch(at)bluewin.ch >-- Original-Nachricht -- >Date: Fri, 24 Jun 2005 09:54:15 -0400 >Reply-To: "Tufts, Jennifer" <jennifer.tufts(at)UCONN.EDU> >From: "Tufts, Jennifer" <jennifer.tufts(at)UCONN.EDU> >Subject: roughness judgments >To: AUDITORY(at)LISTS.MCGILL.CA > >Dear List, > >Does anyone have experience with methods of obtaining judgments of the >comparative roughness of beating tones or AM stimuli varying along one >or more dimensions? I'm hoping to avoid common pitfalls associated with >either instructions or method, and I'd particularly like to find a >method amenable to within- and across-group analysis, if such a thing >exists. I'm also trying to avoid paired comparisons.... > >Many thanks for any suggestions. > >Jennifer Reinhart Frosch, Dr. phil. nat., Sommerhaldenstr. 5B, CH-5200 Brugg. Phone: 0041 56 441 77 72. Mobile: 0041 79 754 30 32. E-mail: reinifrosch(at)bluewin.ch


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Electrical Engineering Dept., Columbia University