Tuning with a fork [fork partials]

Horace Greeley hgreeley@stanford.edu
Mon, 23 Aug 2004 10:34:21 -0700


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Hi, John,

At 09:28 AM 8/23/2004, you wrote:
>Hi David,
>
>I realize that.
>
>However, I don't think the distortion could be considered an harmonic, 
>which is what the question asked.

Yes, on both counts...and, that's the issue.  It does not matter what the 
generator produces if the speaker introduces distortion which may/may not 
be perceived as a harmonic.

Best.

Horace


>
>John
>John M. Ross
>Windsor, Nova Scotia, Canada
><mailto:jrpiano@win.eastlink.ca>jrpiano@win.eastlink.ca
>----- Original Message -----
>From: <mailto:dporritt@mail.smu.edu>David M. Porritt
>To: <mailto:pianotech@ptg.org>pianotech@ptg.org
>Sent: Monday, August 23, 2004 1:15 PM
>Subject: Re: Tuning with a fork [fork partials]
>
>John:
>
>I'm sure that the Accufork and TuneLab both produce a sine wave.  Howver, 
>unless you have a very capable speaker there is going to be distortion 
>there and partials added.  It takes quite a good speaker to reproduce a 
>440Hz sine wave with no distortion.
>
>dave
>
>__________________________________________
>David M. Porritt, RPT
>Meadows School of the Arts
>Southern Methodist University
>Dallas, TX 75275
><mailto:dporritt@mail.smu.edu>dporritt@mail.smu.edu
>
>
>----- Original message ---------------------------------------->
>From: John Ross <<mailto:jrpiano@win.eastlink.ca>jrpiano@win.eastlink.ca>
>To: Pianotech <<mailto:pianotech@ptg.org>pianotech@ptg.org>
>Received: Mon, 23 Aug 2004 13:02:28 -0300
>Subject: Re: Tuning with a fork [fork partials]
>
>Hi,
>Al Sanderson told me that the Accu-Fork, gave a pure tone, with no harmonics.
>Regards,
>John M. Ross
>Windsor, Nova Scotia, Canada
><mailto:jrpiano@win.eastlink.ca>jrpiano@win.eastlink.ca
>----- Original Message -----
>From: <mailto:BobDavis88@aol.com>BobDavis88@aol.com
>To: <mailto:pianotech@ptg.org>pianotech@ptg.org
>Sent: Monday, August 23, 2004 12:55 PM
>Subject: Re: Tuning with a fork [fork partials]
>
>Joe Goss writes:
>To check your accu fork open the battery compartment and look for a little
>white plastic slot ( 1/8" at the most ).
>
>Hello Joe,
>
>Thanks for the info. I didn't make myself clear. My AccuFork is right on 
>pitch. What I was wondering about was if the harmonic content of a newer 
>unit was any different from the partial-rich output of mine.
>
>Thanks for the reply,
>Bob Davis

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