Author: Mark Charette
Date: 1999-02-16 01:10
Hiroshi wrote:
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As to material effects,there have been no objective experiment conducted in the past.
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Hiroshi, you need to start looking. A. H. Benade did _many_ experiments. Don Casodonte wrote a thesis on reed/mouthpiece coupling, along with vortex shedding and tip vortices, especially as related to initial reed vibration. There's _plenty_ out there if you'll just look around.
BTW - it is non-trivial to measure laminar/turbulent flow boundary conditions and vertex generation in a mouthpiece model, and Casadonte found that scaling doesn't work as well as anticipated. Reed vibration was much more complex that imagined, especially coupled with non-uniform pressure gradients (the holes on a clarinet are not uniformly distributed from left-right, causing a gradient at the mouthpiece). Casadonte finally did create an FE model which could predict reed modes rather well, at least as compared with movies taken from inside the mouthpiece as a clarinet was played.
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The Clarinet BBoard
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