| Patch near field acoustic holography based on particle velocity measurements. | |
| | |
MedLine Citation:
|
PMID: 19640038 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
Patch near field acoustic holography (PNAH) based on sound pressure measurements makes it possible to reconstruct the source field near a source by measuring the sound pressure at positions on a surface that is comparable in size to the source region of concern. Particle velocity is an alternative input quantity for NAH, and the advantage of using the normal component of the particle velocity rather than the sound pressure as the input of conventional spatial Fourier transform based NAH and as the input of the statistically optimized variant of NAH has recently been demonstrated. This paper examines the use of particle velocity as the input of PNAH. Because the particle velocity decays faster toward the edges of the measurement aperture than the pressure does and because the wave number ratio that enters into the inverse propagator from pressure to velocity amplifies high spatial frequencies, PNAH based on particle velocity measurements can give better results than the pressure-based PNAH with a reduced number of iterations. A simulation study, as well as an experiment carried out with a pressure-velocity sound intensity probe, demonstrates these findings. |
| | |
Authors:
|
Yong-Bin Zhang; Finn Jacobsen; Chuan-Xing Bi; Xin-Zhao Chen |
Related Documents
:
|
8515508 - Vocal characteristics of children with cleft lip/palate and associated velopharyngeal i... 903208 - Ureterocolostomy. an antireflux technique. 3408398 - Tympanometry using a sweep-frequency probe tone and its clinical evaluation. 9263948 - The response to sudden change in vocal tract resistance during stop consonant production. 7928868 - Comparison of static and dynamic measurements of intrinsic peep in anesthetized cats. 9676718 - Does insulin therapy have a hypertensive effect in type 2 diabetes? |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 126 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2009 Aug |
Date Detail:
|
Created Date: 2009-07-30 Completed Date: 2009-10-06 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
|
Languages: eng Pagination: 721-7 Citation Subset: - |
Affiliation:
|
Institute of Sound and Vibration Research, Hefei University of Technology, Hefei, China. zybmy1997@163.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: Travel-time sensitivity kernels versus diffraction patterns obtained through double beam-forming in ...
Next Document: Distortion-product otoacoustic emission input/output characteristics in normal-hearing and hearing-i...