Publication Date

1996

Document Type

Dissertation/Thesis

First Advisor

Rossing, Thomas D., 1929-

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Physics

LCSH

Music--Acoustics and physics; Handbells

Abstract

The sound intensity patterns of two G1 handbells were investigated. One bell is aluminum and the other is traditional bronze. The results indicate that the aluminum bell has a better radiation efficiency for the (2,0) mode fundamental (f= 49 Hz). Sound intensity was mapped for the two tuned modes of vibration: the (2,0) and (3,0) modes. The parametric radiation (twice the mode frequency) was significant for both modes, especially the (3,0). The measurement of both active and reactive sound intensity reveals a better picture of the sound field than sound pressure alone. Both of the bells are poor radiators of the fundamental because of their small dimensions compared to the sound wavelength in air. [Both bells on loan from Malmark, Inc.]

Comments

Includes bibliographical references (leaf [47])

Extent

viii, 58 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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