发明名称 |
Acoustic treatment performance testing |
摘要 |
A method and system for acoustic treatment performance testing in a free-field acoustic environment is provided. A sound source directs a gated acoustic pulse at an acoustic treatment. Acoustic pressures of the gated acoustic pulse and reflected energy from the acoustic treatment are measured from a location approximately in-line with the source and the acoustic treatment. This measurement location is at least one-half the wavelength of the frequency of interest away from the source and is at least a distance equal to (t*c/2) away from the acoustic treatment where t is equal to the duration of the gated acoustic pulse and c is equal to the speed of sound in the free-field acoustic environment. The acoustic pressures of the gated acoustic pulse and reflected energy are compared as an indication of performance of the acoustic treatment at a frequency of interest.
|
申请公布号 |
US6155116(A) |
申请公布日期 |
2000.12.05 |
申请号 |
US19990416133 |
申请日期 |
1999.10.04 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
MUENCH, JOHN D.;CORRIVEAU, PIERRE J.;WYNN, PAUL W. |
分类号 |
G01N29/11;G01N29/34;(IPC1-7):G01N29/00 |
主分类号 |
G01N29/11 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|