Detail publikačního výsledku

THE INFLUENCE OF A REALISTIC MICROPHONE ARRAY ON NEAR FIELD ACOUSTIC HOLOGRAPHY

GRATZ, P.

Originální název

THE INFLUENCE OF A REALISTIC MICROPHONE ARRAY ON NEAR FIELD ACOUSTIC HOLOGRAPHY

Anglický název

THE INFLUENCE OF A REALISTIC MICROPHONE ARRAY ON NEAR FIELD ACOUSTIC HOLOGRAPHY

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Various methods of visualising sound fields on the basis of measurements with microphone arrays have been examined. The methods are based on the principles of near field acoustic holography (NAH) and include STSF (Spatial Transform of Sound Fields), STSF NAH with Wiener filter, Iterative STSF NAH, and SONAH (Statistically Optimal NAH). A realistic model of a vibrating surface has been developed in order to examine the performance of the different NAH methods with respect to the precision of the estimated sound pressure fields, the calculation time, and the sensitivity to microphone errors and imperfections such as amplitude and phase mismatch. The influence of a realistic microphone array that disturbs the sound field is also investigated using a three-dimensional boundary element model of the array.

Anglický abstrakt

Various methods of visualising sound fields on the basis of measurements with microphone arrays have been examined. The methods are based on the principles of near field acoustic holography (NAH) and include STSF (Spatial Transform of Sound Fields), STSF NAH with Wiener filter, Iterative STSF NAH, and SONAH (Statistically Optimal NAH). A realistic model of a vibrating surface has been developed in order to examine the performance of the different NAH methods with respect to the precision of the estimated sound pressure fields, the calculation time, and the sensitivity to microphone errors and imperfections such as amplitude and phase mismatch. The influence of a realistic microphone array that disturbs the sound field is also investigated using a three-dimensional boundary element model of the array.

Klíčová slova v angličtině

sound field, microphone arrays

Autoři

GRATZ, P.

Rok RIV

2011

Vydáno

08.07.2002

Nakladatel

NASA

Místo

Orlando, Florida, USA

Kniha

Ninth International Congress on Sound anv Vibration

Strany od

20

Strany počet

6

BibTex

@inproceedings{BUT5477,
  author="Petr {Grätz}",
  title="THE INFLUENCE OF A REALISTIC MICROPHONE ARRAY ON NEAR FIELD ACOUSTIC HOLOGRAPHY",
  booktitle="Ninth International Congress on Sound anv Vibration",
  year="2002",
  pages="6",
  publisher="NASA",
  address="Orlando, Florida, USA"
}