NDLI: A robust voice activity detector applied for AMR

Content Provider	IEEE Xplore Digital Library
Author	Chen Dong Kuang Jingming
Copyright Year	2000
Description	Author affiliation: Dept. of Electron. Eng., Beijing Inst. of Technol., China (Chen Dong)
Abstract	In a digital mobile communication system, during typical telephone conversation, 35% of the time is the real cost to transmit active speech, the other remaining time is full of inactive speech including silence, pauses and noise. Considering the limited spectral resources and power consumption of a mobile phone, a significant capacity gain may be achieved by exploiting the silence gaps. How to develop the silence efficiently for other aims is an important question. The voice activity detector is a key part used to implement silence compression, which can be used to reduce the power consumption of hand-held equipment in the GSM system. In this paper, a new robust voice activity detector based on higher order statistics and applied to a variable bit-rate coder is discussed. It is based on third order cumulants and combined with an adaptive multi-rate (AMR) codec. The trial indicates that the performance of the AMR VAD is obviously improved.
Starting Page	687
Ending Page	692
File Size	438055
Page Count	6
File Format	PDF
ISBN	0780357477
DOI	10.1109/ICOSP.2000.891604
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-08-21
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Speech enhancement Energy consumption Noise robustness Mobile communication Telephony Costs Active noise reduction Mobile handsets GSM
Content Type	Text
Resource Type	Article

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