New methods of measuring normal acoustic impedance
By: by James L. Wayman
Contributors: Naval Postgraduate School (U.S.)
Publisher: Naval Postgraduate School
Published: 1984
Place of publication: Monterey, California
Language: eng
Subjects: Acoustic impedance; Measurement; Signal processing; Sound-waves
Description: In recent years new methods based on signal processing technical have been developed to measure the normal acoustic impedance of materials. These methods proved to be consdierably faster easier to implement than the SRW method they replace. Mathematical, hardware and software aspects of these techniques are discussed and results obtained over a frequency range of 200-4000 Hz for several architectural materials are presented.
Notes: "NPS-53-84-0005"--Cover.

Cover title.

"January 1984"--Cover.

"Prepared for: Chief of Naval Research, Arlington, VA 22217."

"Technical report for period October 1982-October 1983."--cover.

Includes bibliographical references (p. 7)

"Approved for public release; distribution is unlimited"--Cover.

Technical report; 1984.

ck/ 4/15/09.