A Response from J. Wolf

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From: Joe Wolfe, INTERNET:J.Wolfe@unsw.edu.au
To: Gary Morrison, MorriSonics
Date: Mon, Feb 17, 1997 7:09:28 AM

RE: Re: can anyone explain these "ghosttones"?

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Date: Mon, 17 Feb 1997 17:08:23 +1000
To: Gary Morrison
From: J.Wolfe@unsw.edu.au (Joe Wolfe)
Subject: Re: can anyone explain these "ghosttones"?

>> Plucked strings are not harmonic, and noticeably so in many cases such
>> as pianos. Percussion instruments (you mention bells) have components
>> that depart even further from harmonic ratios.
>
> Uhmmm... Well, that may perhaps be true of SOME plucked strings, maybe
>perhaps violin or viola pizzicato. But I don't think the same can be said
>for many, and possibly the majority, of plucked strings, including 'cello
>and bass viol pizzicato and guitar.


I did say, the first time I mentioned it, that they were "in general" not
harmonic, and here the addition of "noticeably so in many cases" suggestst
that in other cases they are not noticeably so.

In guitars with steel strings, I find the upper partials sharp sometimes,
but I agree that it's not a big problem for celli.


Your synthesis work sounds interesting: do you do it professionally for
music, or for science or for fun, (or maybe all three?)

Best wishes
Joe

_______________________________________________________________________
Joe Wolfe School of Physics Ph: 61-2-93854954
University of New South Wales UT+10,+11 oct-mar
J.Wolfe@unsw.edu.au Sydney 2052 Australia Fax 61-2-93856060




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