Acoustic holography

Acoustic holography is a method for estimating the sound field near a sound source by measuring acoustic parameters away from the source by means of an array of pressure and/or particle velocity transducers. The measuring techniques included in acoustic holography are becoming increasingly popular in various fields, most notably those of transportation, vehicle and aircraft design, and noise, vibration, and harshness (NVH). The general idea of acoustic holography has led to different versions such as near-field acoustic holography (NAH) and statistically optimal near-field acoustic holography (SONAH).

For audio rendering and production, Wave Field Synthesis and Higher Order Ambisonics are related technologies, respectively modelling the acoustic pressure field on a plane, or in a spherical volume.

References

• Scholte, Rick (2008) (in en). Fourier based high-resolution near-field sound imaging. Technische Universiteit Eindhoven. doi:10.6100/IR639528. https://pure.tue.nl/ws/files/3178965/200910261.pdf. 
• J. D. Maynard; E. G. Williams; Y. Lee (October 1985). "Nearfield acoustic holography: I. Theory of generalized holography and the development of NAH". The Journal of the Acoustical Society of America 78 (4): 1395–1413. doi:10.1121/1.392911. Bibcode: 1985ASAJ...78.1395M. 
• J. Hald. "Patch near-field acoustical holography using a new statistically optimal method". 

External links

• Acoustic holography

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