完整後設資料紀錄
DC 欄位語言
dc.contributor.author許祺東en_US
dc.contributor.authorXu, Qi-Dongen_US
dc.contributor.author張文輝en_US
dc.contributor.authorZhang, Wen-Huien_US
dc.date.accessioned2014-12-12T02:18:19Z-
dc.date.available2014-12-12T02:18:19Z-
dc.date.issued1996en_US
dc.identifier.urihttp://140.113.39.130/cdrfb3/record/nctu/#NT854436002en_US
dc.identifier.urihttp://hdl.handle.net/11536/62506-
dc.description.abstractThis work is aimed to benefit from the concept of discontinuous transmission by sending the DM-encoded speech packets only during talkspurts. We first analyze the effect of transmission errors for EDM coding of autoregressive sources, and we substantiate the theoretical values with simulation values. The combined use of bit alterating rate and prediction gain allows the implementation of a voice activity detector that accurately distinguish between active and silent periods. Furthermore, a comfort noise generator is used to produce on the receiver side synthetic background noise which is not transmitted during the silent periods. This task is done by using the random noise source to excite an all-pole synthesis filter which is characterized by both the short-term energy and the linear prediction parameters of background noise signal.zh_TW
dc.language.isozh_TWen_US
dc.subject非連續傳輸zh_TW
dc.subject包覆式增量調變zh_TW
dc.subject傳輸誤差效應zh_TW
dc.subject封包漏失zh_TW
dc.subject音態偵測zh_TW
dc.subject雜訊補償zh_TW
dc.subject電信zh_TW
dc.subject電子工程zh_TW
dc.subjectDiscontinuous Trxen_US
dc.subjectEmbedded DMen_US
dc.subjectTrx error effecten_US
dc.subjectpacket lossen_US
dc.subjectVADen_US
dc.subjectComfort Noiseen_US
dc.subjectTELECOMMUNICATIONen_US
dc.subjectELECTRONIC-ENGINEERINGen_US
dc.title非連續語音傳輸系統zh_TW
dc.titleDiscontinuous Speech Transmission Systemen_US
dc.typeThesisen_US
dc.contributor.department電信工程研究所zh_TW
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