DOA estimation in car for abnormal sound localisation

Guan, L; Gu, F; Fazenda, BM; Ball, A; Yichun, Y; Pengxiao, T

Abstract

Spurious noise in car cabinet can be not only annoying bust also indicative of some potential faults. A small square microphone array with 4 sensors was adopted in this paper to
localize the sound source in car for fault diagnosis. A new voice activity detection (VAD) algorithm was proposed for the typical discontinuous short-time noise in car due to some fault and applied to direction of arrival (DOA) estimation as a pre-processing stage. Four different time delay estimation methods were compared based on the measurements from a typical passenger. Experimental results
illustrate that the VAD algorithm is crucial to achieve robust fault localization performance and the generalized cross-correlation method with phase transform weighting function is an appropriate fault localizer in car.

Citation

Guan, L., Gu, F., Fazenda, B., Ball, A., Yichun, Y., & Pengxiao, T. (2009, August). DOA estimation in car for abnormal sound localisation. Presented at 8th International Conference on Damage Assessment of Structures, Beijing

• Presentation Conference Type: Other
• Conference Name: 8th International Conference on Damage Assessment of Structures
• Conference Location: Beijing
• Start Date: Aug 3, 2009
• End Date: Aug 5, 2009
• Publication Date: Aug 1, 2009
• Deposit Date: Jul 8, 2010
• Publicly Available Date: Jul 8, 2010
• Keywords: DOA estimation, VAD, fault localization
• Additional Information: Event Type : Conference