NDLI: A Speech Enhancement Approach for Live Teaching System Using a Novel Hybrid Double Talk Detector

Content Provider	IEEE Xplore Digital Library
Author	Qinghua Zheng Weizhan Zhang Sha Gong Yiqin Yu Geli Lv
Copyright Year	2006
Description	Author affiliation: Dept. of Comput. Sci., Xi'an Jiaotong Univ. (Qinghua Zheng; Weizhan Zhang; Sha Gong; Yiqin Yu; Geli Lv)
Abstract	Acoustic echo is a very trouble question in the live teaching system where teacher's speech will be echoed in the classroom after a moment. This paper presents a speech enhancement framework shaping for live teaching system based on a novel hybrid double-talk detector (DTD). The proposed double-talk detection algorithm consists of two decision stages. First, double-talk is detected based on the classic energy-based approach. While a further judgment for silence situation is made in the second stage. If silence is announced, the microphone channel is shut down to reduce the bandwidth requirement. After simulation and experiment, it is found that not only the proposed approach is effective in enhancing the speech quality but also can it save the network bandwidth for e-learning system
Sponsorship	IEEE Beijing Section
Starting Page	1
Ending Page	4
File Size	3876824
Page Count	4
File Format	PDF
ISBN	142440164X
DOI	10.1109/CSCWD.2006.253232
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-05-03
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Speech enhancement Education Detectors Acoustic signal detection Echo cancellers Detection algorithms Change detection algorithms Microphones Bandwidth Filters Live Teaching Acoustic Echo Cancellation Double-talk Detector
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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