The design, mathematical modeling, construction, and testing of an acoustic test system intended to support the performance of high-intensity acoustic effects experiments on large targets at low-sonic to infrasonic frequencies described. The system uses a compressed-air source based on automotive superchargers, a low-impedance airflow modulator, and a two-volume Helmholtz resonator test chamber to achieve sustained high-purity sinusoidal sound pressure levels in excess of 155 dB in a 2.5-m3 test volume at frequencies from 2 to 20 Hz.

Authors: Boesch, Jr., H. Edwin; Reiff, Christian G.; Benwell, Bruce T.
Affiliations: U.S. Army Research Laboratory, Adelphi, MD ; Directed Energy Technologies, Sumerduck, VA(See document for exact affiliation information.)
JAES Volume 49 Issue 12 pp. 1131-1147; December 2001
Publication Date: December 15, 2001

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