Accession Number:

ADA027783

Title:

Research in High Intensity Sound.

Descriptive Note:

Final rept. 1 Nov 70-31 Oct 75,

Corporate Author:

TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS

Personal Author(s):

• Blackstock,David T.

Report Date:

1976-06-01

Pagination or Media Count:

54.0

Abstract:

During the period 1 November 1970 to 31 October 1975 basic research in nonlinear acoustics was carried out. The research, which was both theoretical and experimental, may be separated into three major areas. In one area N waves from electric sparks were used to study propagation, focusing, and diffraction of high intensity transient waves. Research was conducted on periodic finite-amplitude waves in a second area. In particular the author studied propagation in tubes, horns, and open media propagation in inhomogeneous media acoustic saturation directional characteristics of beams and suppression of sound by sound. Finally research was done on the propagation of finite-amplitude noise, both in tubes and in open media.

Descriptors:

• *ACOUSTIC WAVES
• *SOUND TRANSMISSION
• MATHEMATICAL MODELS
• NUMERICAL ANALYSIS
• NONLINEAR SYSTEMS
• ACOUSTIC ATTENUATION

Subject Categories:

• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE