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Journal Article

Impulse Measurement of Acoustic Impedance

Authors: Merhaut, Josef

Journal of the Audio Engineering Society · Volume 37 · Issue 5 · pp. 343–352 · May 1989

Abstract

An electrostatic transducer, having a high internal acoustic impedance and fed by rectangular voltage pulses, is the source of acoustic volume velocity transmitted to the measured acoustic impedance Z/ax. The spectrum of the sound pressure pulses p(t) is obtained with an FFT processor. Measurements are taken first on a cylindrical waveguide and then on the unknown Z/ax. the logarithmic difference of the two curves gives the normalized value of Z/ax. Examples are shown for measurements of acoustic impedance and acoustic transfer impedance.

Details

Publication
Journal of the Audio Engineering Society
Volume
37
Issue
5
Pages
343–352
Publication date
May 6, 1989
Affiliation
Technical University, Prague, Czechoslovakia (See document for exact affiliation information.)
Type
Journal Article