> Date: Sat, 03 May 1997 18:50:06 -0400 (EDT) > From: Jon Page <jpage@capecod.net> > Subject: Re: fasle beats mystery > To: pianotech@byu.edu > Reply-to: pianotech@byu.edu Try moving the lid up and down when someone is playing or tuning. Interesting effect... > I notice the Doppler effect when someone walks by the piano. > They sometimes try to be so quite but it doesn't matter, the > mere fact of being there disturbs the vibes, man. > Jon Page > Harwich Port, Cape Cod, Mass. (jpage@capecod.net) > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > At 04:00 PM 5/3/97 -0700, you wrote: > >The fan blade chops off pieces of piano sound and sends it back to our > >ears with a doppler-shifted pitch! Just like the old submarine movies > >where you hear the SONAR sounds in the background. When sound is coming > >toward you the pitch is higher than when it is going away. When it > >mixes with the sound your ear gets directly from the piano--instant > >false beats! > > >Warren > > Jon Page > Harwich Port, Cape Cod, Mass. (jpage@capecod.net) > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > ilvey Pacifica, CA ilvey@a.crl.com
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