Sound Visualization in Time Domain by Using Spatial Envelope공간 포락을 적용한 시간 영역 음장 가시화

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Acoustic holography exhibits the spatial distribution of sound pressure in time or frequency domain. The obtained picture often contains far more than what we need in practice. For example, when we need to know only the locations and overall propagation pattern of sound sources, a method to show only what we need has to be introduced. One way of obtaining the necessary information is to use envelope in space. The spatial envelope is a spatially slowly-varying amplitude of acoustic waves which contains the information of sources location. A spatial modulation method has been theoretically developed to get a spatial envelope. By applying the spatial envelope, not only the necessary information is obtained but also computation time is reduced during the process of holography. The spatial envelope is verified as an effective visualization scheme in time domain by being applied to complicated sound fields.
Publisher
한국소음진동공학회
Issue Date
2008-01
Language
Korean
Citation

한국소음진동공학회논문집, v.18, no.1, pp.20 - 25

ISSN
1598-2785
URI
http://hdl.handle.net/10203/90230
Appears in Collection
ME-Journal Papers(저널논문)
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