Calibration of Anechoic Chamber Using Inverse Square Law and Its Data Processing

ZHENG Yunshan; NIU Feng; ZHONG Bo

doi:10.12338/j.issn.2096-9015.2020.0433

Volume 66 Issue 7

Aug. 2022

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ZHENG Yunshan, NIU Feng, ZHONG Bo. Calibration of Anechoic Chamber Using Inverse Square Law and Its Data Processing[J]. Metrology Science and Technology, 2022, 66(7): 54-57. doi: 10.12338/j.issn.2096-9015.2020.0433

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ZHENG Yunshan, NIU Feng, ZHONG Bo. Calibration of Anechoic Chamber Using Inverse Square Law and Its Data Processing[J]. Metrology Science and Technology, 2022, 66(7): 54-57. doi: 10.12338/j.issn.2096-9015.2020.0433

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Calibration of Anechoic Chamber Using Inverse Square Law and Its Data Processing

doi: 10.12338/j.issn.2096-9015.2020.0433

National Institute of Metrology, Beijing 100029, China

Available Online: 2022-06-20
Publish Date: 2022-08-04

Abstract

Abstract

Anechoic chamber and hemi-anechoic chamber provide the necessary acoustic environment for various acoustic tests, mainly including frequency range, spatial range, and background noise of the free sound field. The anechoic chamber and hemi-anechoic chamber absorb the sound wave incident on the wall and reduce the reflected sound by laying sound-absorbing materials in the chamber, thereby generating a free sound field environment. This paper introduces the principle and method of calibrating the free sound field of anechoic chamber and hemi-anechoic chamber by inverse square law and the data processing of the free sound field of the anechoic chamber to provide experience reference for improving the measurement accuracy of the free sound field of anechoic chamber.
- anechoic chamber,
- inverse square law,
- technical indicator,
- calibration method,
- data processing

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References(15)

References

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