The Research of Time-Frequency Feature Extraction of Loudspeaker Acoustic Signal by Pre Emphasis in Time Domain

Author

Qi, Yuming ; Xu, Zengpu ; Zhou, Congling ; Yu, Demin

Author_Institution

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

Volume

3

fYear

2008

fDate

20-22 Dec. 2008

Firstpage

352

Lastpage

356

Abstract

The analysis of loudspeaker response signal is one of the main methods of loudspeaker fault diagnosis. In this paper, the loudspeaker response signal is treated by the pre emphasis in time domain, and it is processed by short time Fourier transform. More evident time-frequency feature of fault loudspeaker is obtained than before pretreatment. It provides a more effective method to recognize and identify the fault loudspeakers.

Keywords

Fourier transforms; acoustic signal processing; fault diagnosis; feature extraction; loudspeakers; time-frequency analysis; fault diagnosis; loudspeaker acoustic signal; short time Fourier transform; time domain pre emphasis method; time-frequency feature extraction; Fault detection; Fault diagnosis; Feature extraction; Fourier transforms; Loudspeakers; Nonlinear distortion; Sampling methods; Testing; Time frequency analysis; Working environment noise; STFT; correlation coefficient; pre emphasize; time-frequency characteristic;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Information Technology Application, 2008. IITA '08. Second International Symposium on

Conference_Location

Shanghai

Print_ISBN

978-0-7695-3497-8

Type

conf

DOI

10.1109/IITA.2008.516

Filename

4740017