Title :
Loudspeaker fault detection using time-frequency representations
Author :
Davy, Manuel ; Cottereau, Hélène ; Doncarli, Christian
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
Abstract :
This paper addresses the problem of loudspeaker testing. Two applications are investigated: loudspeaker manufacturing fault detection and maintenance. In order to comply with practical requirements, we propose a new, brief, nonstationary test signal. Recorded loudspeaker responses are processed using an improved time-frequency decision algorithm. The fault detection procedure is tested with real data. The results show its accuracy and practical interest
Keywords :
fault diagnosis; loudspeakers; maintenance engineering; manufacture; production testing; signal classification; signal representation; time-frequency analysis; FM test signal; loudspeaker fault. detection; loudspeaker maintenance; loudspeaker manufacturing; loudspeaker testing; nonstationary test signal; recorded loudspeaker responses; time-frequency classification; time-frequency decision algorithm; time-frequency representations; time-frequency signal classification/detection; Acoustic testing; Audio systems; Fault detection; Impedance; Linearity; Loudspeakers; Manufacturing; Object detection; Signal processing; Time frequency analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.940371
