Eigenmode analysis of the interference patterns in reverberant sound fields

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AuthorSearch for:
TypeArticle
Journal titleJournal of the Acoustical Society of America
ISSN0001-4966
Volume68
Issue1
Pages184190; # of pages: 7
Subjectreverberation (sounds); sound measurement; sound power; Acoustics
AbstractResults for the interference pattern in a reverberant sound field have been derived by means of an eigenmode analysis and compared with results obtained from the free-wave model. It is found that the incoherent or random nature of the sound field assumed in the free-wave model can only be achieved if the room is excited by random noise. For single frequency excitation an equivalent incoherent field can be approached by additional averages of results over many different source locations. The analytical solutions are supported by a computer study based on the eigenmode model. A detailed discussion about the correction factor due to boundary interferences in relation to sound power measurement is also given.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-900
NRC number18232
2089
NPARC number20374246
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Record identifier1ca331fc-8fb1-4737-b72a-8f7cbbea9cf2
Record created2012-07-23
Record modified2016-05-09
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