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Removal of siren mixed with speech by wavelet tranform and adaptive notch filter

Sepehr, H; Ahmadi, M; Brennan, P; (2008) Removal of siren mixed with speech by wavelet tranform and adaptive notch filter. In: 2008 HANDS-FREE SPEECH COMMUNICATION AND MICROPHONE ARRAYS. (pp. 241 - 244). IEEE

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Abstract

Siren signals are used to warn other cars and pedestrians about the presence of an emergency vehicle. This signal is leaked into the communication path between the emergency vehicle and the emergency call centre and substantially degrades the intelligibility of the speech signal. In the past, research has been mainly focused on siren cancellation on the source of siren signal by using an extra microphone which requires consideration of acoustical characteristics of the emergency vehicle.The solution and approach in this paper is for attenuation of the siren in the emergency call centre without having any knowledge about the emergency vehicle, type of siren and the presence of a siren.

Type: Proceedings paper
Title: Removal of siren mixed with speech by wavelet tranform and adaptive notch filter
Event: Workshop on Hands-Free Speech Communication and Microphone Arrays
Location: Trento, ITALY
Dates: 2008-05-06 - 2008-05-08
ISBN-13: 978-1-4244-2337-8
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/134672
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