Siren noise attenuation by non-linear processing of time-frequency information

被引：0
|
作者：
Sepehr, Hamid [1 ]
Ahmadi, Masoud [2 ]
Brennan, Paul [1 ]
机构：
[1] UCL, Dept Elect Engn, London, England
[2] Elara Tek Ltd, London, England
来源：
NEW ASPECTS OF SIGNAL PROCESSING AND WAVELETS | 2008年
关键词：
Siren reduction; noise reduction; STFT; wavelet; notch filter;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Siren signals are used to warn other cars and pedestrian 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 speech signal. In past, research has been mainly focused on siren cancellation on the source of siren signal by using extra microphones which requires complex acoustic and electrical consideration. In this paper, two solutions and approach are presented for attenuation of the siren in an emergency call centre without having any knowledge about the emergency vehicle, type of siren and the presence of a siren.
引用
收藏
页码：52 / +
页数：2
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