Hi Ed. I believe the phenomena is called difference tones. Strange thing really. You wouldnt think it really works. RicB A440A@aol.com wrote: > Greetings, > Here is a new one on me, it comes from the piano-L list: > > >>Jonathan Gonder performed the Bach-Busoni Chaconne in d > minor. In one of the passages, near the end of the piece, the very lowest > notes of the piano were heard fortissimo in a descending line which went > beyond the lowest A of the piano to a G. > > Jon said how this tone was produced, I can't remember what he said > other than that he struck two notes, a fourth apart, and that in doing so, > the low G was produced. He said that organists do this to compensate when > they do not have pipes which go low enough. > > Can anyone explain this to me? << > > Ideas, anyone? > > Ed Foote RPT > www.uk-piano.org/edfoote/ > www.uk-piano.org/edfoote/well_tempered_piano.html > <A HREF="http://artists.mp3s.com/artists/399/six_degrees_of_tonality.html"> > MP3.com: Six Degrees of Tonality</A> > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html
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