Author: Tony Pay ★2017
Date: 2014-10-14 02:03
>> I've seen both modes demonstrated, but not inside someone's mouth. At the time (mid 1970's), there was no way to see inside someones mouth while they where playing the instrument, so this was done by creating a chamber to hold the mouthpiece that allowed the reed to be viewed while air was pumped into the chamber. Though most of the time the reed vibrated in mode #1, sometimes it would start in mode #2. Either way it started, it would stay in that mode until the air pressure was removed, meaning that both where stable modes of vibration. I could not hear a significant difference in the sound produced by either mode. No one at the time could say whether one or both modes actually occurred while playing.>>
Was this work ever published?
Was any attempt made in it to simulate an embouchure – eg, with a rubber pad pressed against the reed inside the chamber?
I wrote something about a similar device here:
http://test.woodwind.org/Databases/lookup.php/Klarinet/1998/12/000764.txt
...and that had an 'embouchure'. It was needed because without it, the sound was pretty terrible.
And naively, my intuition would be that the presence of an embouchure would tend to suppress your mode #2 – but what do I know?
My next step would be to write an email to the acoustics guys at UNSW.
Tony
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