Show simple item record

dc.contributor.advisorRossing, Thomas D., 1929-en_US
dc.contributor.authorCanfield, Gregory H.en_US
dc.date.accessioned2016-01-14T21:05:52Z
dc.date.available2016-01-14T21:05:52Z
dc.date.issued1996
dc.identifier.urihttp://commons.lib.niu.edu/handle/10843/14905
dc.descriptionIncludes bibliographical references (pages [83]-84)en_US
dc.description.abstractThe hammered dulcimer is a folk instrument of trapezoidal shape that is played with two hand-held hammers. For this thesis, the acoustics of two professionally made and two home-made hammered dulcimers were studied. Using the techniques of mode scanning, modal impact analysis, and time average holography, the modal frequencies and modal shapes of the dulcimers were determined. As would be expected by the different designs of the four instruments, the modal frequencies and shapes varied greatly between the dulcimers. In most modes, a nodal line occurs near the bridges. A (l,0)-mode of the soundboard was found in three of the instruments, and for the professionally made instruments, the soundboard brace divided the soundboard into two similarly sized regions and accentuated the (1,0) mode by having the brace near a nodal line. Although the asymmetries of the internal bracing and the lack of literature on orthotropic trapezoidal plates made it difficult to model the vibration of the soundboards, the backs of two of the dulcimers have been modeled either as orthotropic rectangular plates or as isotropic trapezoidal plates, and good agreement with the experimental results was obtained.en_US
dc.format.extentviii, 97 pagesen_US
dc.language.isoengen_US
dc.publisherNorthern Illinois Universityen_US
dc.rightsNIU 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.en_US
dc.subject.lcshMusic--Acoustics and physicsen_US
dc.subject.lcshDulcimeren_US
dc.titleAcoustics of the hammered dulcimeren_US
dc.type.genreDissertation/Thesisen_US
dc.typeTexten_US
dc.contributor.departmentDepartment of Physicsen_US
dc.description.degreeM.S. (Master of Science)en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record