Publication Date

2013

Document Type

Thesis

Committee Members

Ivan Medvedev (Committee Member), Frank Mobley (Advisor), Doug Petkie (Committee Chair)

Degree Name

Master of Science (MS)

Abstract

The author has studied several legacy landmark methodologies to develop an original measurement technique. Spherical harmonics modeling practices were leveraged to accurately represent a source directivity pattern. In this thesis a lightweight microphone measurement array that was manually maneuvered around a static noise source was employed. The measurement technique consisted of inserting a head-tracker sensor onto the microphone array to allow the location of the captured acoustic Sound Pressure Level (SPL) to be investigated. By leveraging the historical methodologies the acoustic SPL and location data collected with this technique were processes to represent a directivity pattern of the compressor source chosen. The results indicated that the measurement technique is valid for capturing acoustic SPL and location data of a static noise source with a dynamic array. Propagation techniques yielded a ten decibel difference between the measured and predicated SPLs. The dynamic measurement technique and method for characterizing the three-dimensional acoustic directivity of a static noise source is further presented in this thesis.

Page Count

105

Department or Program

Department of Physics

Year Degree Awarded

2013

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.


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Physics Commons

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