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L2 Influence on L1 : Chinese subject realisation in Chinese-English bilinguals
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Poesía china antigua traducida al español: Estudio comparativo del adjetivo transpuesto a otras categorías y del epíteto
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Improving Chinese University Students' Speaking Performance in Mobile-Assisted English Learning
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The role of dynamic features in speaker verification
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Abstract:
The thesis presents study to explore the role of dynamic features in speaker verification. Based on the theory that dynamic information should contain important speaker information, modelling the dynamics should have the potential to improve the speaker verification performance. Experiments on TD-SV using segmental hidden Markov models (SHMMs) on the YOHO database show performance improvement. However there is no significant improvement for TI-SV from experiments on the Switchboard database, using segmental GMMs. Analysis of the TD-SV results confirms that the speech dynamics modeled by SHMMs contribute more to the SV accuracy. Analysis of the TI-SV results indicates that the lack of speech dynamic information is a feature of GMM systems. It seems that the priority of the maximum likelihood training algorithm is to model stationary regions, and the role of dynamic features in GMM system, is to ensure that the classification focuses on static regions rather than to model dynamics. Study on TI-SV was carried out using conventional GMMs. Without RASTA filtering, the `delta-only' system works best. However, after RASTA filtering, the `static-plus-delta' system performs best. The results suggest that the good performance of the `delta-only' system before RASTA is mainly due to the noise robustness of the delta parameters.
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Keyword:
TK Electrical engineering. Electronics Nuclear engineering
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URL: http://etheses.bham.ac.uk//id/eprint/596/1/Liu10PhD.pdf http://etheses.bham.ac.uk//id/eprint/596/ http://etheses.bham.ac.uk//id/eprint/596/1.hassmallThumbnailVersion/Liu10PhD.pdf
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Enhancing student participation in "group discussions" within English lessons in a Chinese institution of higher education
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Liu, Ying. - : Auckland University of Technology, 2006
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Comparison between C++ and Java : a case study using a networked automated gas station stimulation system
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Comparison between C++ and Java : a case study using a networked automated gas station stimulation system
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