Sound Detection and Classification for Medical Telesurvey

M. Vacher, D. Istrate, L. Besacier, J.F. Serignat, and E. Castelli (France)

Keywords

Acoustical Signal Processing, Noise, Sound Detection, Sound Classification, Wavelet Transform

Abstract

Medical Telesurvey needs human operator assistance by smart information systems. This paper deals with the sound event detection in a noisy environment and presents a first classification approach. Detection is the first step of our sound analysis system and is necessary to extract the sig nificant sounds before initiating the classification step. An algorithm based on the Wavelet Transform is evaluated in noisy environment. Then Wavelet based cepstral coeffi cients are proposed and their results are compared with more classical parameters. Detection algorithm and sound classification methods are applied to medical telemonitor ing. In our opinion, microphones surveying life sounds are better preserving patient privacy than video cameras.

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