Modeling pulse-like lip vibrations in brass instruments
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During the starting transient of a note on a brass instrument it can take several cycles of lip vibration before acoustics reflections from the end of the instrument can influence the lip frequency. Under certain conditions the lip may fail to oscillate at the pitch of the air column resulting in an unwanted pulse-like waveform with relatively low repetition rates (similar to the vocal fry register of phonation in the human voice). This is often observed in the playing of beginners if the lips are insufficiently tense or if the top and bottom lips overlap to a large extent. In this study the reasons for this behavior will be investigated using modeling techniques with the aim of improving the agreement between physical models and measured transients by including the forces responsible for this effect.
Kemp , J A & Smith , R 2013 , Modeling pulse-like lip vibrations in brass instruments . in Proceedings of Meetings on Acoustics . vol. 19 , Acoustical Society of America , Melville, NY , The 21st International Congress on Acoustics , Montreal , Canada , 2/07/13 . https://doi.org/10.1121/1.4799610conference
Proceedings of Meetings on Acoustics
Copyright © 2013 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Proceedings of Meetings on Acoustics, Volume 19, and may be found at http://asadl.org/poma/resource/1/pmarcw/v19/i1/p035055_s1