David and others: if the pitch change technique works or diminishes the problem, what would be the next step to keep the overtone diminished or better nearly inaudible? Paul C Subject: RE: High overtone As someone else mentioned this sounds to me like a longitudinal mode frequency. Change the pitch of the note and see if the pitch of the whine changes or if it goes away. dp David M. Porritt dporritt at smu.edu
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