Influence of wall vibrations on the sound of brass wind instruments

The results of an experimental and theoretical investigation of the influence of wall vibrations on the sound of brass wind instruments are presented. Measurements of the transmission function and input impedance of a trumpet, with the bell both heavily damped and freely vibrating, are shown to be c...

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Bibliographic Details
Published inThe Journal of the Acoustical Society of America Vol. 128; no. 5; p. 3161
Main Authors Kausel, Wilfried, Zietlow, Daniel W, Moore, Thomas R
Format Journal Article
LanguageEnglish
Published United States 01.11.2010
Subjects
Acoustics
Architecture
Facility Design and Construction
Humans
Models, Theoretical
Music
Vibration
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Summary:The results of an experimental and theoretical investigation of the influence of wall vibrations on the sound of brass wind instruments are presented. Measurements of the transmission function and input impedance of a trumpet, with the bell both heavily damped and freely vibrating, are shown to be consistent with a theory that assumes that the internal pressure causes an oscillation of the diameter of the pipe enclosing the air column. These effects are shown to be most significant in sections where there are flaring walls, which explains why damping these vibrations in cylindrical pipes normally produces no measurable effects.
ISSN:1520-8524
DOI:10.1121/1.3493457