Title :
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
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;
Conference_Titel :
Intelligent Information Technology Application, 2008. IITA '08. Second International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-0-7695-3497-8
DOI :
10.1109/IITA.2008.516
