Development, Evaluation, and Validation of a High-Resolution Directivity Measurement System for Played Musical Instruments

Author

K Joshua Bodon, Brigham Young University - ProvoFollow

Abstract

A high-resolution directivity measurement system at Brigham Young University has been renovated and upgraded. Acoustical treatments have been installed on the microphone array, professional-grade audio hardware and cabling have been utilized, and user-friendly MATLAB processing and plotting codes have been developed. The directivities of 16 played musical instruments and several loudspeakers have been measured by the system, processed, and plotted. Using loudspeakers as simulated musicians, a comprehensive analysis was completed to validate the system and understand its error bounds. A comparison and evaluation of repeated-capture to single-capture spherical systems was made to demonstrate the high level of detail provided by the 5 degree resolution system. Analysis is undertaken to determine how nonanechoic effects in anechoic chambers influence results. An overview of directivity measurement systems from the literature is provided as well as a dedicated discussion of the directivity measurement system at Brigham Young University.

Degree

MS

College and Department

Physical and Mathematical Sciences; Physics and Astronomy

Rights

http://lib.byu.edu/about/copyright/

BYU ScholarsArchive Citation

Bodon, K Joshua, "Development, Evaluation, and Validation of a High-Resolution Directivity Measurement System for Played Musical Instruments" (2016). Theses and Dissertations. 5653.
https://scholarsarchive.byu.edu/etd/5653

Date Submitted

2016-03-01

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/etd8429

Keywords

musical instrument, acoustic directivity, directivity measurement system, anechoic chamber

Language

english