2013
DOI: 10.1155/2013/241958
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Scan and Paint: Theory and Practice of a Sound Field Visualization Method

Abstract: Sound visualization techniques have played a key role in the development of acoustics throughout history. The development of measurement apparatus and techniques for displaying sound and vibration phenomena has provided excellent tools for building understanding about specific problems. Traditional methods, such as step-by-step measurements or simultaneous multichannel systems, have a strong tradeoff between time requirements, flexibility, and cost. However, if the sound field can be assumed time stationary, s… Show more

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Cited by 13 publications
(5 citation statements)
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References 27 publications
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“…Such a method, in this case a commercial solution providing acoustic holography-like maps of radiated noise level, 26 has been tested on an (non-anechoic) engine test cell. Both the engine and its turbocharger are different from those used for characterizing the noise emission from the compressor.…”
Section: Radiated Noise Measurementmentioning
confidence: 99%
“…Such a method, in this case a commercial solution providing acoustic holography-like maps of radiated noise level, 26 has been tested on an (non-anechoic) engine test cell. Both the engine and its turbocharger are different from those used for characterizing the noise emission from the compressor.…”
Section: Radiated Noise Measurementmentioning
confidence: 99%
“…One of the most effective methods to visualize the measured sound field information is the superimposition of the sound information and a camera image onto a video [10]. Compared with a simple graph of the sound field information, the relationship between the sound propagation and surrounding environment can be more easily assessed.…”
Section: Introductionmentioning
confidence: 99%
“…The tools that are normally used to detect and measure the acoustic field are microphones that have a high sensitivity but need to be inserted inside the acoustic field, which causes alterations in the measurements of complex fields and in the case of imaging an acoustic wave requires a matrix of several microphones. 1 The detection of acoustic waves can be carried out by optical methods [2][3][4] and particularly using interferometry based solutions without disturbing the pressure field. The weak changes of the refractive index in the transparent medium where the light propagates produce a modulation of the optical path along the trajectory of the laser beam.…”
Section: Introductionmentioning
confidence: 99%