Study on the Features of Loudspeaker Sound Faults

Author

Wang, Hongxing ; Xu, Zengpu ; Zhou, Congling ; Qi, Yuming

Author_Institution

Sch. of Mech. Eng., Tianjin Univ. of Sci. & Technol., Tianjin, China

fYear

2009

fDate

19-20 Dec. 2009

Firstpage

155

Lastpage

158

Abstract

In this paper, the short-time Fourier transformation (STFT) is adopted to transform the loudspeaker sound signal. By STFT, the one-dimensional loudspeaker response signal is converted into two-dimensional time-frequency figure. Then, the figure is decomposed into a number of areas according to its harmonics distribution. The peak and mean values of every area are computed. Through observation and calculation, the features of loudspeaker defects are found. According to the experiment, this method is very effective and universal for different types of loudspeakers.

Keywords

Fourier transforms; loudspeakers; time-frequency analysis; STFT; harmonics distribution; loudspeaker defects; loudspeaker sound faults; one-dimensional loudspeaker response signal; short-time Fourier transformation; Acoustic signal detection; Auditory system; Computer vision; Fault diagnosis; Fourier transforms; Humans; Loudspeakers; Signal analysis; Signal processing; Time frequency analysis; STFT; defect; detection; feature; loudspeaker;

fLanguage

English

Publisher

ieee

Conference_Titel

Knowledge Engineering and Software Engineering, 2009. KESE '09. Pacific-Asia Conference on

Conference_Location

Shenzhen

Print_ISBN

978-0-7695-3916-4

Type

conf

DOI

10.1109/KESE.2009.48

Filename

5383597