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From: "Barry B. Bean"
Date: Wed, 14 Apr 1999 10:49:50 -0500 (CDT)
Subject: Re: Buckeye announcement: Comb Materials Test

I'll look forward to seeing the results of this test. The simplified
design should come closer to settling the issue.

BBB


On Tue, 13 Apr 1999 21:38:54 -0500, John Thaden wrote:

>. . . . . . . . . . . . . . . . . . . . . . . . . .
>. . . B H F ' 9 9 A N N O U N C E M E N T . . .
>. . . . . . . . . . . . . . . . . . . . . . . . . .
>. . . . . . . . N E W E V E N T . . . . . . . . .
>. . . . . . . . . . . . . . . . . . . . . . . . . .
>
>Event: Comb Materials Test
> Date: Friday, April 16
> Time: 4:30 PM
> Host: John Thaden
>
>Will two harmonicas sound different if the only difference is comb
>material? Wood vs. plastic? Metal? One metal vs. another? Buckeye Harmonica
>Festival 1999 attendees are invited to participate in an "A/B"-style
>listening test designed to address such questions.
>
>The test will begin promptly at 4:30 on Friday, April 16, and will last
>until 5:30. This is after the Teach-In with Joe Filisko and friends, and
>before the evening activities. The test results will be available Saturday
>afternoon or evening.
>
>The test design imposes certain limitations: First, the harmonicas must be
>easily heard unamplified, so I've selected a classroom-sized room instead
>of an auditorium; it may not fit all who might wish to participate, and the
>door will be closed during the test. Secondly, tests must be replicated
>sufficiently to detect possible materials effects that may be rather
>modest, so time is at a premium; I'll only be explaining how to mark the
>test sheets, not lecturing on harmonica physicoacoustics, even if I could.
>Participants are requested to be equally economical with the precious time.
>
>
>Unlike previous tests, only two comb materials will be compared at a time,
>and listeners will be asked only to guess whether the comb is "same" or
>"different", from that on a harmonica played just previously--an A/B
>design. Also unlike previous tests, the same set of reed plates and cover
>plates will be used with all combs, switched rapidly from one to the other
>via a custom-built quick-release clamp.
>
>You may think the answer to the question "Do materials matter?" is obvious,
>but be assured that many think the opposite answer is equally obvious. I
>hope with your help that some light can be cast where too often only heat
>has been felt.
>
>
>************************************************************
>John J. Thaden, Ph.D., Instructor jjthad~ife.uams.edu
>Department of Geriatrics (501) 257-5583
>University of Arkansas for Medical Sciences FAX: (501) 257-4822
> mail & ship to: J. L. McClellan V.A. Medical Center
> Research-151 (Room GB103 or GC124)
> 4300 West 7th Street
> Little Rock AR 72205 USA
>***********************************************************
>

- -
B.B. Bean - Have horn, will travel bbbe~eancotton.com
Peach Orchard, MO http://www.beancotton.com/bbbean.shtml