Document Detail


On the sound field of a resilient disk in free space.
MedLine Citation:
PMID:  18396997     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Radiation characteristics are calculated for a circular planar sound source in free space with a uniform surface pressure distribution, which can be regarded as a freely suspended membrane with zero mass and stiffness. This idealized dipole source is shown to have closed form solutions for its far-field pressure response and radiation admittance. The latter is found to have a simple mathematical relationship with the radiation impedance of a rigid piston in an infinite baffle. Also, a single expansion is derived for the near-field pressure field, which degenerates to a closed form solution on the axis of symmetry. From the normal gradient of the surface pressure, the surface velocity is calculated. The near-field expression is then generalized to an arbitrary surface pressure distribution. It is shown how this can be used as a simplified solution for a rigid disk in free space or a more realistic sound source such as pre-tensioned membrane in free space with non-zero mass and a clamped rim.
Authors:
Tim Mellow
Related Documents :
18002697 - Motion artifact reduction in blood pressure signals using adaptive digital filter with ...
23273847 - The value of reporting pressure-time integral data in addition to peak pressure data in...
1095707 - Changes of cheek pressure during swallowing following expansion of the maxillary dental...
24857437 - Deformation response of paired donor corneas to an air puff: intact whole globe versus...
23034307 - Mechanical buckling of arterioles in collateral development.
24262017 - Confusion with cerebral perfusion pressure in a literature review of current guidelines...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  123     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-04-09     Completed Date:  2008-05-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1880-91     Citation Subset:  -    
Affiliation:
Nokia UK Ltd., Nokia House, Summit Avenue, Farnborough, Hants GU14 0NG, England. tim.mellow@nokia.com
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Low-frequency sound transmission through a gas-liquid interface.
Next Document:  An acoustic intensity-based method for reconstruction of radiated fields.