Noise source identification test of fan on beamformin

Author

Yuntao Liu ; Zhiying Gao ; Zheng Chang ; Zhentao Yang ; Yunzhi Li ; Zhiguang Wang

Author_Institution

Coll. of Energy & Power Eng., Inner Mongolia Univ. of Technol., Hohhot, China

fYear

2012

fDate

21-23 Sept. 2012

Firstpage

615

Lastpage

618

Abstract

In order to solve the fan noise problems, it was applied noise sources identification and analyses system with 60-channel microphone array, which can carry out the measurement of full-field sound pressure of the fan and reconstruct the sound pressure distribution of full-field sound pressure at different rotate speed in corresponding frequency. Through analyzing the experimental results, it was found that the maximum sound pressure level of the fan corresponding to mid-frequency of band is 1 KHz; the maximum sound pressure level of the fan were located at centre when it was at different rotational speed, and the pressure level of noise source decreases with the increase of r/R; and the optimal measuring distance for noise sources identification of the fan is 1.1m.

Keywords

array signal processing; microphone arrays; noise; signal reconstruction; 60-channel microphone array; beamforming; fan noise problems; noise source identification test; sound pressure distribution reconstruction; Acoustics; Arrays; Frequency measurement; Noise; Noise measurement; Pressure measurement; Rotation measurement; Beamforming; Fan; Noise source;

fLanguage

English

Publisher

ieee

Conference_Titel

Network Infrastructure and Digital Content (IC-NIDC), 2012 3rd IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4673-2201-0

Type

conf

DOI

10.1109/ICNIDC.2012.6418828

Filename

6418828