mirage

A coherent image source method for flat waveguides with locally reacting boundaries.

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

A coherent image source method for flat waveguides with locally reacting boundaries.

Show simple item record

dc.contributor.author Min, Hequn.
dc.contributor.author Qiu, Xiaojun.
dc.contributor.author Li, Ningrong.
dc.date.accessioned 2011-09-15T08:45:57Z
dc.date.available 2011-09-15T08:45:57Z
dc.date.copyright 2010
dc.date.issued 2011-09-15
dc.identifier.citation Min, H., Qiu, X., & Li, N. (2010). A coherent image source method for flat waveguides with locally reacting boundaries. Proceedings of 20th International Congress on Acoustics, ICA 2010, Sydney, Australia.
dc.identifier.uri http://hdl.handle.net/10220/7076
dc.description.abstract An image source method is presented for coherently evaluating the sound field from a point source in flat waveguides with two infinite and parallel locally reacting boundaries, where one is sound absorbing and the other is reflective. The method starts from formulating sound reflections into integrals by plane wave expansion, and the inherent intractability in solving these integrals in such spaces is avoided by introducing a physically plausible assumption that wave fronts remain the same before and after the reflection on a near-rigid boundary. By comparisons to the classical wave theory and the existing coherent ray-based methods, it is shown that the proposed method is considerably accurate to predict the sound propagation in flat waveguides with a sound absorbing ceiling and a reflective floor over a broad frequency range and for various source/receiver geometries, even if at large distances from the source compared to the waveguide height while the existing methods are shown to be erroneous.
dc.format.extent 8 p.
dc.language.iso en
dc.rights © 2010 Australian Acoustical Society. This paper was published in Proceedings of 20th International Congress on Acoustics, ICA 2010 and is made available as an electronic reprint (preprint) with permission of Australian Acoustical Society. The paper can be found at the following official URL: http://www.acoustics.asn.au/conference_proceedings/ICA2010/cdrom-ICA2010/papers/p386.pdf.  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
dc.subject DRNTU::Science::Physics::Acoustics and sound.
dc.title A coherent image source method for flat waveguides with locally reacting boundaries.
dc.type Conference Paper
dc.contributor.conference International Congress on Acoustics (20th : 2010 : Sydney, Australia)
dc.contributor.school School of Mechanical and Aerospace Engineering
dc.identifier.openurl http://www.acoustics.asn.au/conference_proceedings/ICA2010/cdrom-ICA2010/papers/p386.pdf
dc.description.version Published version
dc.identifier.rims 160062

Files in this item

Files Size Format View
ICA2010_386.pdf 161.0Kb PDF View/Open

This item appears in the following Collection(s)

Show simple item record

Statistics

Total views

All Items Views
A coherent image source method for flat waveguides with locally reacting boundaries. 476

Total downloads

All Bitstreams Views
ICA2010_386.pdf 244

Top country downloads

Country Code Views
United States of America 73
China 67
Singapore 41
Russian Federation 16
Taiwan 10

Top city downloads

city Views
Beijing 55
Mountain View 51
Singapore 41
Taipei 10
Southampton 4

Downloads / month

  2014-10 2014-11 2014-12 total
ICA2010_386.pdf 0 0 3 3