Measurement of microphone parameters based on high-pressure calibration system

Author

Feng Niu ; Aijian Zheng ; Haijiang Zhu ; Ping Yang ; Longbiao He

Author_Institution

Div. of Mech. & Acoust., Nat. Inst. of Metrol., Beijing, China

fYear

2012

fDate

5-8 Aug. 2012

Firstpage

687

Lastpage

691

Abstract

This paper presents a method for measuring a few microphone parameters based on the high-pressure calibration system. The high pressure calibration apparatus and method are first given. Then the linearity-deviations of three microphones are measured, the uncertainties of three microphones are estimated, and the dynamic range limits of three microphones at high sound pressure levels (SPL) are measured. In this study, the range of the linearity-deviations is from -0.02dB to +0.02dB, and that of the uncertainties is less 0.05dB. The dynamic range limit of three microphones is 149dB, 147dB and 162dB, respectively. Compared with the manufacturer parameters, experimental results are consistent with manufacturer data.

Keywords

acoustic intensity measurement; calibration; measurement uncertainty; microphones; SPL; dynamic range limits; high-pressure calibration system; linearity-deviations; measurement uncertainties; microphone parameter measurement; sound pressure levels; Calibration; Distortion measurement; Dynamic range; Frequency measurement; Microphones; Pressure measurement; Uncertainty; Calibration System; Dynamic Range Limit; High Pressure Level;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics and Automation (ICMA), 2012 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4673-1275-2

Type

conf

DOI

10.1109/ICMA.2012.6283225

Filename

6283225