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The Clarinet BBoard The C4 standard

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Re: Bb side trill key

Author: Mark P. Jasuta
Date: 2003-03-31 16:33

Hi all,
Applying standard poppet valve design criteria; Max flow sound /air or whatever occurs when the pad is lifted off the seat (tonehole) 30% of the inside diameter of the tone hole. Anything after that has no effect other than slowing your fingers down to cover this extra distance. This is why manufacturers generally stay close to this spec. It's all about playing speed, but even the fastest fingers playing on the weakest sprung keys with the least possible movement will have a limit. Yamaha has this down to a science.
Mark

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