Accession Number : AD0766852

Title :   Nonlinear Air Acoustics.

Descriptive Note : Final rept. 1 Feb 71-31 Dec 72,

Corporate Author : TEXAS UNIV AUSTIN APPLIED RESEARCH LABS

Personal Author(s) : Blackstock,David T.

Report Date : 20 FEB 1973

Pagination or Media Count : 17

Abstract : Basic research on nonlinear acoustics in air was performed during calendar years 1971 and 1972. The projects described in this report are as follows: Saturation of acoustic waves; directional beams of intense sound; diffraction of N waves; focusing of N waves by a spherical mirror; propagation of intense periodic waves in a tube; propagation of finite-amplitude noise; propagation of intense acoustic signals through the earth's atmosphere; parametric acoustic array in air; and, parametric reception.

Descriptors :   (*SOUND TRANSMISSION, ATMOSPHERES), PROPAGATION, DIFFRACTION, FOCUSING, NOISE

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE