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The Latest Technology of Noise Source Identification and Development of Microphone


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Category(E)Hot Topics
Author(J)1) 竹田 都萌, 2) 平山 正充
Author(E)1) Tomoe Takeda, 2) Masamitsu Hirayama
Affiliation(J)1) スペクトリス, 2) スペクトリス


Abstract(E)Technology of noise source identification has been developped and established as a countermeasure for noise source in automobile development. This paper describes sound intensity measurements using measurement microphones and the paired microphone method, as well as near-field acoustic holography, beamforming, and SONAH using microphone arrays, all of which are used for it. Recent examples of it include wideband holography, analysis using reference signals, applications to sound power, and in-situ sound absorption coefficient measurements.

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