In a message dated 11/13/2009 9:59:12 P.M. Central Standard Time, dahechler at att.net writes: Yes, you shouldn't have - you are going way out of the context of what I was trying to say - you are back into partials, beats, etc. We never left there. The only "pure" "interval" is a unison. To me, a pure octave is when you play C4 and C5 together, and hear no beats or wave-y-ness. If you listen well enough, there is a lot of beating going on in any octave of any kind. Just like tuning unisons of a tri-string and they are in tune when you hear no beats or waves, except they are an octave apart. No it isn't like that. A true unison (physically correct with mass, tension and length) should be tuned beatless. Octaves are not beatless except perhaps at some selected coincident partial. If C4 is in tune and you hear beats, that means C5 is sharp or flat. No, it means that some (or several) coincident partial set(s) of C4-C5 is (are) beating and that the relationship(s) is (are) either wide or narrow. Paul -- Duaine Hechler Piano, Player Piano, Pump Organ Tuning, Servicing & Rebuilding Reed Organ Society Member Florissant, MO 63034 (314) 838-5587 dahechler at att.net www.hechlerpianoandorgan.com -- Home & Business user of Linux - 10 years -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091113/6f156cde/attachment.htm>
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