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Speech Enhancement for Voice commander in Car environment  

백승권 (한국정보통신대학교 공학부 멀티미디어 그룹)
한민수 (한국정보통신대학교 공학부 멀티미디어 그)
남승현 (배제대학교 전자공학)
이봉호 (한국전자통신연구원 무선방송 연구)
함영권 (한국전자통신연구원 무선방송 연구부)
Publication Information
Journal of Broadcast Engineering / v.9, no.1, 2004 , pp. 9-16 More about this Journal
Abstract
In this paper, we present a speech enhancement method as a pre-processor for voice commander under car environment. For the friendly and safe use of voice commander in a running car, non-stationary audio signals such as music and non-candidate speech should be reduced. Ow technique is a two microphone-based one. It consists of two parts Blind Source Separation (BSS) and Kalman filtering. Firstly, BSS is operated as a spatial filter to deal with non-stationary signals and then car noise is reduced by kalman filtering as a temporal filter. Algorithm Performance is tested for speech recognition. And the results show that our two microphone-based technique can be a good candidate to a voice commander.
Keywords
Speech enhancement; Blind Source Separation; Kalman filter;
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  • Reference
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