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RE: I have a glued together Conn

Author: Mark Charette
Date: 2000-01-12 18:37

Don Poulsen wrote:
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It may change the effective inner diameter of the bore, but tuning is determined by the length of the bore, not its diameter.
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Nope. Diameter has a direct effect on the tuning. A piece of twine hanging down a Bb clarinet will lower the pitch to that closely approximating an A clarinet.

The chimneys made by the tone holes themselves affect the pitch appreciably by effectively changing the diameter of the tube at those points. That's the major reason tape in the toneholes works to help intonation - but, as I put it earlier - madness lies in that direction :^) A piece of tape helping the intonation of a note may or may not help the partials of the note get in tune (things aren't as linear as we wish), so perhaps moving the tonehole would be better - but that maeans the diameter of the hole must change - which means the chimney volume is different ...

Clarinets are made with a reasonable 1st approximation to "correct" intonation (whatever <b>that</b> means) and then we spend the next 50 years trying to get it even better ...

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