Detail publikace

Application of MEMS microphone array for acoustic holography

HAVRÁNEK, Z. BENEŠ, P. KLUSÁČEK, S.

Originální název

Application of MEMS microphone array for acoustic holography

Anglický název

Application of MEMS microphone array for acoustic holography

Jazyk

en

Originální abstrakt

The paper shows the overall potential and applicability of microphone arrays equipped with MEMS miniature capacitive microphones for use with near-field acoustic holography algorithms to visualize and localize sound sources. Comprehensive test of double layer rectangular matrix microphone array and several acoustic holography algorithms has been carried out to find weaknesses of proposed MEMS array technology in practical measurement conditions including complex sources and disturbing sound field. Test setups include determination of secondary (disturbing) source strength, influence of distance of the primary and secondary sources and also measurement array stand-off distance on prediction accuracy of localization and characterization of sound and vibration sources. Attention is also focused on available signal-to-noise ratio of sound pressure measurement with applied MEMS microphones and its influence on determination of regularization parameters for inverse acoustic holography calculation. Drawbacks of complex or even unfeasible calibration procedure for such MEMS transducers also influence the presented prediction accuracy results in practical measurements.

Anglický abstrakt

The paper shows the overall potential and applicability of microphone arrays equipped with MEMS miniature capacitive microphones for use with near-field acoustic holography algorithms to visualize and localize sound sources. Comprehensive test of double layer rectangular matrix microphone array and several acoustic holography algorithms has been carried out to find weaknesses of proposed MEMS array technology in practical measurement conditions including complex sources and disturbing sound field. Test setups include determination of secondary (disturbing) source strength, influence of distance of the primary and secondary sources and also measurement array stand-off distance on prediction accuracy of localization and characterization of sound and vibration sources. Attention is also focused on available signal-to-noise ratio of sound pressure measurement with applied MEMS microphones and its influence on determination of regularization parameters for inverse acoustic holography calculation. Drawbacks of complex or even unfeasible calibration procedure for such MEMS transducers also influence the presented prediction accuracy results in practical measurements.

Dokumenty

BibTex


@inproceedings{BUT115829,
  author="Zdeněk {Havránek} and Petr {Beneš} and Stanislav {Klusáček}",
  title="Application of MEMS microphone array for acoustic holography",
  annote="The paper shows the overall potential and applicability of microphone arrays equipped with
MEMS miniature capacitive microphones for use with near-field acoustic holography algorithms
to visualize and localize sound sources. Comprehensive test of double layer rectangular matrix
microphone array and several acoustic holography algorithms has been carried out to find
weaknesses of proposed MEMS array technology in practical measurement conditions including
complex sources and disturbing sound field. Test setups include determination of secondary
(disturbing) source strength, influence of distance of the primary and secondary sources and also
measurement array stand-off distance on prediction accuracy of localization and characterization
of sound and vibration sources. Attention is also focused on available signal-to-noise ratio of
sound pressure measurement with applied MEMS microphones and its influence on determination
of regularization parameters for inverse acoustic holography calculation. Drawbacks of complex
or even unfeasible calibration procedure for such MEMS transducers also influence the presented
prediction accuracy results in practical measurements.",
  address="European Acoustics Association",
  booktitle="Proceedings of Euronoise 2015",
  chapter="115829",
  howpublished="electronic, physical medium",
  institution="European Acoustics Association",
  year="2015",
  month="may",
  pages="919--924",
  publisher="European Acoustics Association",
  type="conference paper"
}