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Book Chapter

Acoustic Impedance from Motional Impedance Diagrams*

By
R. D. Fay
R. D. Fay
Acoustics Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts
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J. E. White
J. E. White
Acoustics Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts
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Published:
January 01, 2000
Publication history
26 December 1947

Abstract

When an acoustic load is coupled to an electromagnetic transducer through a length of air column, there is a critical length at which an increment in acoustic load produces a maximum increment in electrical impedance. The method described makes use of this critical coupling to obtain an optimum precision in determining an acoustical impedance. It is noteworthy that the value of the characteristic impedance of the air column is not assumed but is directly measured.

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Contents

Society of Exploration Geophysicists Geophysics Reprint Series

Seismic Wave Propagation: Collected Works of J. E. White

J. E. White
J. E. White
Professor Emeritus, Colorado School of Mines
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Society of Exploration Geophysicists
Volume
21
ISBN electronic:
9781560802471
Publication date:
January 01, 2000

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