Accession Number:

ADA279246

Title:

Measurement of Sound Intensity and Sound Power

Descriptive Note:

Technical rept.

Corporate Author:

MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)

Personal Author(s):

Report Date:

1994-02-01

Pagination or Media Count:

52.0

Abstract:

In this report the concept of a measurement technique for calculating sound intensity in the frequency domain is discussed and also how such a measurement system can be implemented in practice by using a frequency domain analyser. The technique described employs a dual-channel FFT analyser to obtain a cross power spectrum from the two microphones from which sound intensity is calculated. This approach enables a general-purpose FFT analyser together with a micro-computer to perform the function of a dedicated sound intensity analyser. The application of sound intensity measurement technique in sound power determination of a reference Source is presented.

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE