The University of Southampton
University of Southampton Institutional Repository

The effects of flanking transmission on sound attenuation in lined ducts

Record type: Article

It is well known that flanking sound transmission can affect the acoustic attenuation in ducts lined with dissipative material. The exact nature of the flanking paths, “air-borne” (sometimes termed “radiation by-pass”) through “breakout” and subsequent “breakin” of sound through the duct walls, or “structure-borne” through axial transmission of weakly coupled (and lightly attenuated) structural/acoustic waves, is less well known. In this paper, an approximate analysis is presented for the case of a lined sheet metal duct located in a reverberant sound field. A Rayleigh-Ritz procedure is used to model the structural/acoustic modes propagating in the duct. The principle of reciprocity is then used to model the effects of breakin from the reverberant enclosure. Theoretical predictions of sound pressure on the duct axis are compared to experimental data for a typical air-moving duct, and the relative importance of the two flanking mechanisms is made clear.

Full text not available from this repository.

Citation

Cummings, A. and Astley, R.J. (1995) The effects of flanking transmission on sound attenuation in lined ducts Journal of Sound and Vibration, 179, (4), pp. 617-646. (doi:10.1006/jsvi.1995.0041).

More information

Published date: 26 January 1995

Identifiers

Local EPrints ID: 166479
URI: http://eprints.soton.ac.uk/id/eprint/166479
ISSN: 0022-460X
PURE UUID: 907c882c-ee4a-4abc-94ae-18003523df3d

Catalogue record

Date deposited: 29 Oct 2010 08:23
Last modified: 18 Jul 2017 12:25

Export record

Altmetrics


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×