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Conference Paper: Mixed excitation LPC vocoder operating at very low bit rate

TitleMixed excitation LPC vocoder operating at very low bit rate
Authors
Mao, JSChan, SCHo, KL
Issue Date1997
Citation
Annual International Conference On Universal Personal Communications - Record, 1997, v. 2, p. 406-409 How to Cite?
AbstractThis paper presents a 1.2 kb/s mixed LPC vocoder based on MultiBand Excitation (MBE) model. The vocoder extracts the pitch by a robust and efficient tracking algorithm. The cut-off frequency, which is a fundamental parameter in mixed excitation system, is obtained by the v/uv decision of MBE analysis. In order to reduce the bit rate, the coder has used frame interpolation between neighboring frames. A fast and reliable linear interpolation algorithm is proposed. Informal listening tests indicate that for either clean speech or telephone speech, the synthesized speech sounds natural and intelligible, and the quality is better than that of 2.4 kb/s LPC-10e standard.
Persistent Identifierhttp://hdl.handle.net/10722/158220

 

DC FieldValueLanguage
dc.contributor.authorMao, JSen_US
dc.contributor.authorChan, SCen_US
dc.contributor.authorHo, KLen_US
dc.date.accessioned2012-08-08T08:58:36Z-
dc.date.available2012-08-08T08:58:36Z-
dc.date.issued1997en_US
dc.identifier.citationAnnual International Conference On Universal Personal Communications - Record, 1997, v. 2, p. 406-409en_US
dc.identifier.urihttp://hdl.handle.net/10722/158220-
dc.description.abstractThis paper presents a 1.2 kb/s mixed LPC vocoder based on MultiBand Excitation (MBE) model. The vocoder extracts the pitch by a robust and efficient tracking algorithm. The cut-off frequency, which is a fundamental parameter in mixed excitation system, is obtained by the v/uv decision of MBE analysis. In order to reduce the bit rate, the coder has used frame interpolation between neighboring frames. A fast and reliable linear interpolation algorithm is proposed. Informal listening tests indicate that for either clean speech or telephone speech, the synthesized speech sounds natural and intelligible, and the quality is better than that of 2.4 kb/s LPC-10e standard.en_US
dc.languageengen_US
dc.relation.ispartofAnnual International Conference on Universal Personal Communications - Recorden_US
dc.titleMixed excitation LPC vocoder operating at very low bit rateen_US
dc.typeConference_Paperen_US
dc.identifier.emailChan, SC:scchan@eee.hku.hken_US
dc.identifier.emailHo, KL:klho@eee.hku.hken_US
dc.identifier.authorityChan, SC=rp00094en_US
dc.identifier.authorityHo, KL=rp00117en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0031334112en_US
dc.identifier.volume2en_US
dc.identifier.spage406en_US
dc.identifier.epage409en_US
dc.identifier.scopusauthoridMao, JS=7402727784en_US
dc.identifier.scopusauthoridChan, SC=13310287100en_US
dc.identifier.scopusauthoridHo, KL=7403581592en_US

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