Accession Number:

ADA143638

Title:

A Comparison of Impedance Measurement Techniques in Air.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1984-03-01

Pagination or Media Count:

92.0

Abstract:

The acoustic impedance of several Helmholtz resonators were measured using two different techniques. The first technique employed the conventional Standing Wave Tube method. The second was the Dual-Microphone Transfer Function of J. Y. Chung and D. A. Blaser. The calculability of the frequency dependent Helmholtz resonator impedance allowed the methods to be compared for both absolute accuracy and relative precision. The average relative precision for the SWT technique was 4.2 while the average for the dual-microphone technique was 18.4. Author

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE