Sound field separation with a double layer velocity transducer array (L)

2011 ◽  
Vol 130 (1) ◽  
pp. 5-8 ◽  
Author(s):  
Efren Fernandez-Grande ◽  
Finn Jacobsen
Keyword(s):  
Double Layer ◽  
Sound Field ◽  
Transducer Array ◽  
Velocity Transducer ◽  
Layer Velocity ◽  
Field Separation

scholarly journals Sound field separation for planar sources facing a parallel reflector

2019 ◽  
Vol 149 ◽  
pp. 181-191 ◽  
Author(s):  
Elias Zea ◽  
Ines Lopez Arteaga
Keyword(s):  
Sound Field ◽  
Field Separation

scholarly journals The principle of statistically optimal planar near-field acoustical holography and the sound field separation technique

2005 ◽  
Vol 54 (3) ◽  
pp. 1253 ◽  
Author(s):  
Li Wei-Bing ◽  
Chen Jian ◽  
Yu Fei ◽  
Bi Chuan-Xing ◽  
Chen Xin-Zhao
Keyword(s):  
Near Field ◽  
Sound Field ◽  
Separation Technique ◽  
Acoustical Holography ◽  
Field Separation

scholarly journals Sound field separation with cross measurement surfaces

PLoS ONE ◽  
2018 ◽  
Vol 13 (6) ◽  
pp. e0196837
Author(s):  
Jin Mao ◽  
Jinfu Du
Keyword(s):  
Sound Field ◽  
Field Separation

Asymptotic analysis of solitons and double layers at the acoustic speed

2017 ◽  
Vol 83 (6) ◽  
Author(s):  
Carel P. Olivier ◽  
Frank Verheest ◽  
Shimul K. Maharaj
Keyword(s):  
Asymptotic Behaviour ◽  
Decay Rate ◽  
Double Layer ◽  
Taylor Series Expansion ◽  
The Other ◽  
Double Layers ◽  
Exponential Decay Rate ◽  
Layer Velocity ◽  
Acoustic Speed

In this paper, we consider the asymptotic behaviour of solitons and double layers. By using the Sagdeev pseudopotential formalism, a Taylor series expansion is used to derive the asymptotic behaviour. For solitons and supersolitons that propagate faster than the acoustic speed, an exponential decay rate is derived. In contrast, for acoustic speed solitons and supersolitons, we show that the decay rate is algebraic, resulting in much fatter tails. These results can be extended to double layers. However, the double layer velocity affects only one side of the tail. The other side of the tail is affected by the multiplicity of the double layer root. All the results are illustrated by means of a case study.

Development of Near-Field Acoustical Holograph and its Review

2014 ◽  
Vol 971-973 ◽  
pp. 1598-1601
Author(s):  
Xu Liu ◽  
Xiao Qin Liu ◽  
Chang Liu
Keyword(s):  
Near Field ◽  
Sound Field ◽  
Separation Technique ◽  
Acoustic Holography ◽  
Noise Sources ◽  
Engineering Applications ◽  
Powerful Technique ◽  
Experiment And Simulation ◽  
Acoustical Holography ◽  
Field Separation

Near-field acoustic holography (NAH) is a powerful technique for identifying noise sources and visualizing acoustic field.The theory and algorithm of NAH techniques are introduced , and it is proved by experiment and simulation. The researches on near field acoustical holography (NAH) are reviewed，including the sound field separation technique and Patch NAH technique arisen in recent years.The difficulties in NAH and research on current situations are discussed , Finally,some engineering applications are introduced by detailed examples.

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