Detail publikace

Near field acoustic holography with double layer array processing

HAVRÁNEK, Z. JACOBSEN, F.

Originální název

Near field acoustic holography with double layer array processing

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Near field acoustic holography (NAH) is an experimental technique for analysing sound fields near sources. A simulation study has been carried out, and this paper examines and compares i) classical planar NAH based on spatial transforms (single layer NAH), ii) a similar technique based on measurements in two parallel planes (double layer NAH), and iii) a method that avoids spatial transforms and thus leakage by using statistical considerations (SONAH). The source is a point driven panel that generates a complicated sound field. The influence of reflections and background noise from other sources is examined. The results indicate improved accuracy in localisation and characterisation of a sound source with double layer array processing in the presence of sources from the "wrong" side of the measurement array. An investigation of the influence of transducer mismatch errors on the global accuracy of the NAH calculations shows that NAH with single and double layer arrays are affected in a similar manner.

Klíčová slova

acoustic holography, sound sources, acoustic pressure, double-layer microphone array

Autoři

HAVRÁNEK, Z.; JACOBSEN, F.

Rok RIV

2008

Vydáno

4. 7. 2008

Nakladatel

EAA

ISBN

978-2-9521105-7-0

Kniha

Archives (1992-2008) of the EUROpean Conference on NOISE control, euronoise on CD-ROM

Číslo edice

1

Strany od

1

Strany do

6

Strany počet

6

BibTex

@inproceedings{BUT26670,
  author="Zdeněk {Havránek} and Finn {Jacobsen}",
  title="Near field acoustic holography with double layer array processing",
  booktitle="Archives (1992-2008) of the EUROpean Conference on NOISE control, euronoise on CD-ROM",
  year="2008",
  number="1",
  pages="1--6",
  publisher="EAA",
  isbn="978-2-9521105-7-0"
}