A Speech Enhancement Approach for Live Teaching System Using a Novel Hybrid Double Talk Detector
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...
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| creator | Qinghua Zheng Weizhan Zhang Sha Gong Yiqin Yu Geli Lv |
| description | 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 |
| doi_str_mv | 10.1109/CSCWD.2006.253232 |
| format | Conference Proceeding |
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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. 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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</description><subject>Acoustic Echo Cancellation</subject><subject>Acoustic signal detection</subject><subject>Bandwidth</subject><subject>Change detection algorithms</subject><subject>Detection algorithms</subject><subject>Detectors</subject><subject>Double-talk Detector</subject><subject>Echo cancellers</subject><subject>Education</subject><subject>Filters</subject><subject>Live Teaching</subject><subject>Microphones</subject><subject>Speech enhancement</subject><isbn>142440164X</isbn><isbn>9781424401642</isbn><isbn>9781424401659</isbn><isbn>1424401658</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2006</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNo1j8tOwzAQRY0QElDyAYiNf6Bl_MjDyygpFCmCRYpgV-xkTAN5yQmV-vcYAbMZnXtHIx1CrhmsGAN1m5XZS77iANGKh4ILfkICFSdMcimBRaE6JZf_IF_PSTBNH-BHKJGI-IK8pbQcEas9Xfd73VfYYT_TdBzdoH1oB0eL5oB0ix6b_p2Wx2nGjj5PP6Dp43DAlm6OxjU1zYcv0_pb3X7SHGes5sFdkTOr2wmDv70g27v1Ntssi6f7hywtlo2CeWlCKa1QIVQmVsLWtlZWhQaUioxBwUBWtRayBmm9EzDOIfJ9VBuoQm1isSA3v28bRNyNrum0O-68teJRIr4BSSlUtw</recordid><startdate>200605</startdate><enddate>200605</enddate><creator>Qinghua Zheng</creator><creator>Weizhan Zhang</creator><creator>Sha Gong</creator><creator>Yiqin Yu</creator><creator>Geli Lv</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>200605</creationdate><title>A Speech Enhancement Approach for Live Teaching System Using a Novel Hybrid Double Talk Detector</title><author>Qinghua Zheng ; Weizhan Zhang ; Sha Gong ; Yiqin Yu ; Geli Lv</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i90t-b544f3950cb793fdfd9f95b0996bbe3104cda34d04f65901220695b6db0c5ab73</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Acoustic Echo Cancellation</topic><topic>Acoustic signal detection</topic><topic>Bandwidth</topic><topic>Change detection algorithms</topic><topic>Detection algorithms</topic><topic>Detectors</topic><topic>Double-talk Detector</topic><topic>Echo cancellers</topic><topic>Education</topic><topic>Filters</topic><topic>Live Teaching</topic><topic>Microphones</topic><topic>Speech enhancement</topic><toplevel>online_resources</toplevel><creatorcontrib>Qinghua Zheng</creatorcontrib><creatorcontrib>Weizhan Zhang</creatorcontrib><creatorcontrib>Sha Gong</creatorcontrib><creatorcontrib>Yiqin Yu</creatorcontrib><creatorcontrib>Geli Lv</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Qinghua Zheng</au><au>Weizhan Zhang</au><au>Sha Gong</au><au>Yiqin Yu</au><au>Geli Lv</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>A Speech Enhancement Approach for Live Teaching System Using a Novel Hybrid Double Talk Detector</atitle><btitle>2006 10th International Conference on Computer Supported Cooperative Work in Design</btitle><stitle>CSCWD</stitle><date>2006-05</date><risdate>2006</risdate><spage>1</spage><epage>4</epage><pages>1-4</pages><isbn>142440164X</isbn><isbn>9781424401642</isbn><eisbn>9781424401659</eisbn><eisbn>1424401658</eisbn><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</abstract><pub>IEEE</pub><doi>10.1109/CSCWD.2006.253232</doi><tpages>4</tpages></addata></record> |
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| ispartof | 2006 10th International Conference on Computer Supported Cooperative Work in Design, 2006, p.1-4 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Acoustic Echo Cancellation Acoustic signal detection Bandwidth Change detection algorithms Detection algorithms Detectors Double-talk Detector Echo cancellers Education Filters Live Teaching Microphones Speech enhancement |
| title | A Speech Enhancement Approach for Live Teaching System Using a Novel Hybrid Double Talk Detector |
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