Frame erasure concealment is studied to solve the problem of rapid speech quality reduction due to the loss of speech parameters during speech transmission. A large hidden Markov model is applied to model the immittan...Frame erasure concealment is studied to solve the problem of rapid speech quality reduction due to the loss of speech parameters during speech transmission. A large hidden Markov model is applied to model the immittance spectral frequency （ISF） parameters in AMR-WB codec to optimally estimate the lost ISFs based on the minimum mean square error （MMSE） rule. The estimated ISFs are weighted with the ones of their previous neighbors to smooth the speech, resulting in the actual concealed ISF vectors. They are used instead of the lost ISFs in the speech synthesis on the receiver. Comparison is made between the speech concealed by this algorithm and by Annex I of G. 722. 2 specification, and simulation shows that the proposed concealment algorithm can lead to better performance in terms of frequency-weighted spectral distortion and signal-to-noise ratio compared to the baseline method, with an increase of 2.41 dB in signal-to-noise ratio （SNR） and a reduction of 0. 885 dB in frequency-weighted spectral distortion.展开更多
To enhance the speech quality that is degraded by environmental noise,an algorithm was proposed to reduce the noise and reinforce the speech.The minima controlled recursive averaging(MCRA) algorithm was used to estima...To enhance the speech quality that is degraded by environmental noise,an algorithm was proposed to reduce the noise and reinforce the speech.The minima controlled recursive averaging(MCRA) algorithm was used to estimate the noise spectrum and the partial masking effect which is one of the psychoacoustic properties was introduced to reinforce speech.The performance evaluation was performed by comparing the PESQ(perceptual evaluation of speech quality) and segSNR(segmental signal to noise ratio) by the proposed algorithm with the conventional algorithm.As a result,average PESQ by the proposed algorithm was higher than the average PESQ by the conventional noise reduction algorithm and segSNR was higher as much as 3.2 dB in average than that of the noise reduction algorithm.展开更多
Different cultures have their own culture-specifics, which may pose great difficulties to the translators. In the process of cultural transfer there will be various kinds of losses, for it is hard to achieve complete ...Different cultures have their own culture-specifics, which may pose great difficulties to the translators. In the process of cultural transfer there will be various kinds of losses, for it is hard to achieve complete equivalent effect. The main purpose is to research into the issues of cultural loss in translating certain cultural elements, and how to compensate the loss in Chinese-English translation.展开更多
Discourse markers(DMs) are characterized by multifunctionality in different contexts.This study addressed the use of the Chinese DM,na(那),as a solution to topical divergence,during clinical interactions with right-he...Discourse markers(DMs) are characterized by multifunctionality in different contexts.This study addressed the use of the Chinese DM,na(那),as a solution to topical divergence,during clinical interactions with right-hemisphere-damaged(RHD) patients.Drawing on data collected from clinical interviews between psychotherapists and RHD patients,this study examined the functions of na in response to RHD topical divergence,focusing on the topic and attitudinal aspects.It was found that na was mainly employed by psychotherapists to mark a reproffer of interview topics(i.e.,an attempt to return to earlier topics),and a display of disalignment and disaffiliation with RHD topical divergence.These functions of na reflect the psychotherapists’ attempts to overcome communicative problems arising from RHD topical divergence,so as to ensure the achievement of the communicative goal.Thus,na can be interpreted as a compensatory strategy for dealing with RHD topical divergence on an interpersonal level.These findings not only expand our knowledge about the function spectrum of na,but also offer insights for RHD patients’ interlocutors to enhance conversational communication with RHD patients via the compensatory strategy.展开更多
The present paper analyzes the strategic choices for learning Chinese by 300 Hungarian university students. The survey summarizes the most often used Chinese language learning strategies and verbal language learning s...The present paper analyzes the strategic choices for learning Chinese by 300 Hungarian university students. The survey summarizes the most often used Chinese language learning strategies and verbal language learning strategies of Hungarian language learners one by one. With the help of the method of multidimensional scaling, the survey got to the result that the preference of the general language learning strategies is characterized by a strong opposition. In the case of the choice and use of three strategies--the social, the meta-cognitive and the cognitive strategies, language learners prefer a combined choice or non-choice. While in the use of the emotional, compensation and memorization strategies, a strong opposition emerges. Those using memorization strategies less prefer the emotional and the compensation strategies. This is true vice versa as well, those using emotional strategies, use memorization and compensation strategies less often. While the relation of the general language learning strategies was characterized by a certain opposition, in the use of the verbal strategies a strict continuity could be detected. Hungarian language learners consider the use of almost all verbal strategies with few exceptions to be successful in their communication. The results of the Variables path analysis with Partial Least-Squares Estimation （LVPLS） model revealed all those connections that structurally exist among the three exogen background latent variables （language level, language learner style and the ascriptive background） and the two endogen latent variables （the language learning strategies and the verbal strategies）. All of these latent variables measured with several manifest variables of the second exogen background variables, the language learning style showed the biggest affect to strategy use, this variable influences the successfulness of the learning of Chinese most strongly.展开更多
This paper presents an improved voice morphing algorithm based on Gaussian Mixture Model(GMM) which overcomes the traditional one in the terms of overly smoothed problems of the converted spectral and discontinuities ...This paper presents an improved voice morphing algorithm based on Gaussian Mixture Model(GMM) which overcomes the traditional one in the terms of overly smoothed problems of the converted spectral and discontinuities between frames.Firstly, a maximum likelihood estimation for the model is introduced for the alleviation of the inversion of high dimension matrixes caused by traditional conversion function.Then, in order to resolve the two problems associated with the baseline, a codebook compensation technique and a time domain medial filter are applied.The results of listening evaluations show that the quality of the speech converted by the proposed method is significantly better than that by the traditional GMM method, and the Mean Opinion Score(MOS) of the converted speech is improved from 2.5 to 3.1 and ABX score from 38% to 75%.展开更多
Power quality is a complex term that is defined by the legislation, but also as an obligation of the supplier and customer. The customer must return the negative effects of its consumers （taking reactive power, harmo...Power quality is a complex term that is defined by the legislation, but also as an obligation of the supplier and customer. The customer must return the negative effects of its consumers （taking reactive power, harmonic generation, phase unbalance） down to the prescribed limits. This primarily refers to the presence of non-linear consumers, leading to distortion of the basic parameters of voltage and current, in steady or transient conditions, and therefore the deformation of waveform. One way to reduce the negative feedback effects, especially with inductive loads, is the reactive energy compensation. The paper presents one of the solution for reactive power compensation, applied on the pumping station of public company ＂Waterworks and Sewerage---Bar＂, Bar.展开更多
This paper studies the effect of different lengths of pre-task planning time on the frequency and accuracy of self-repairs for Chinese intermediate and advanced English learners.The findings reveal that the increased ...This paper studies the effect of different lengths of pre-task planning time on the frequency and accuracy of self-repairs for Chinese intermediate and advanced English learners.The findings reveal that the increased pre-task planning time strongly improves fluency and accuracy of self-repairs for both lexical and syntactic errors in the advanced group,but enhanced fluency and accuracy are not witnessed in the intermediate group as planning time increases.The differences are mainly due to the fact that some intermediate learners are not well equipped with the appropriate way of preparation for oral presentation tasks since some write down their ideas in Chinese.Thus errors will increasingly emerge in the transfer.Besides,they usually give priority to accuracy while neglecting fluency.展开更多
The present study investigated the effects of explicit metapragmatic instruction on foreign language learners＇ performance of compliment responses （CRs）. Eighty-two non-English major students participated in this s...The present study investigated the effects of explicit metapragmatic instruction on foreign language learners＇ performance of compliment responses （CRs）. Eighty-two non-English major students participated in this study. They were randomly assigned to two groups, an experimental group that received explicit metapragmatic instruction on compliment responses and a control group that did not. A pretest-posttest research design was adopted. The data were collected through a written discourse completion task （WDCT） with six scenarios concerning the topics of appearance, performance, and personality. The results revealed that learners who received explicit instruction dramatically decreased their use of Accept strategy and increased Combination （CB） strategy at the macro level; more specifically, a decrease in Appreciation and an increase in Accept ＋ Accept at the micro level. The learners of the control group made little progress in their performance. The study sheds light on pragmatics learning in an EFL setting and provides implications for pragmatics pedagogy.展开更多
基金The Science Foundation of Southeast University(No.XJ0704268)the Natural Science Foundation of the Education Department of Anhui Province(No.KJ2007B088)
文摘Frame erasure concealment is studied to solve the problem of rapid speech quality reduction due to the loss of speech parameters during speech transmission. A large hidden Markov model is applied to model the immittance spectral frequency （ISF） parameters in AMR-WB codec to optimally estimate the lost ISFs based on the minimum mean square error （MMSE） rule. The estimated ISFs are weighted with the ones of their previous neighbors to smooth the speech, resulting in the actual concealed ISF vectors. They are used instead of the lost ISFs in the speech synthesis on the receiver. Comparison is made between the speech concealed by this algorithm and by Annex I of G. 722. 2 specification, and simulation shows that the proposed concealment algorithm can lead to better performance in terms of frequency-weighted spectral distortion and signal-to-noise ratio compared to the baseline method, with an increase of 2.41 dB in signal-to-noise ratio （SNR） and a reduction of 0. 885 dB in frequency-weighted spectral distortion.
文摘To enhance the speech quality that is degraded by environmental noise,an algorithm was proposed to reduce the noise and reinforce the speech.The minima controlled recursive averaging(MCRA) algorithm was used to estimate the noise spectrum and the partial masking effect which is one of the psychoacoustic properties was introduced to reinforce speech.The performance evaluation was performed by comparing the PESQ(perceptual evaluation of speech quality) and segSNR(segmental signal to noise ratio) by the proposed algorithm with the conventional algorithm.As a result,average PESQ by the proposed algorithm was higher than the average PESQ by the conventional noise reduction algorithm and segSNR was higher as much as 3.2 dB in average than that of the noise reduction algorithm.
文摘Different cultures have their own culture-specifics, which may pose great difficulties to the translators. In the process of cultural transfer there will be various kinds of losses, for it is hard to achieve complete equivalent effect. The main purpose is to research into the issues of cultural loss in translating certain cultural elements, and how to compensate the loss in Chinese-English translation.
基金This study is supported by the following projects:the Chinese Ministry of Education(MOE)Humanities and Social Science Research Funding(18YJC740042)the Research Project of Guangdong Planning Office of Philosophy and Social Science(GD16CWW05)+1 种基金the MOE Key Research Project of Humanities and Social Science(16JJD740006)conducted by the Center for Linguistics and Applied Linguistics(CLAL),Guangdong University of Foreign Studies(GDUFS)supported by both the Department of Education of Guangdong Province and the Center for Linguistics and Applied Linguistics at Guangdong University of Foreign Studies,P.R.China for the frontier research and its theoretical innovations in interpersonal pragmatics(“人际语用学前沿研究与理论创新”项目)(2018WZDXM006).
文摘Discourse markers(DMs) are characterized by multifunctionality in different contexts.This study addressed the use of the Chinese DM,na(那),as a solution to topical divergence,during clinical interactions with right-hemisphere-damaged(RHD) patients.Drawing on data collected from clinical interviews between psychotherapists and RHD patients,this study examined the functions of na in response to RHD topical divergence,focusing on the topic and attitudinal aspects.It was found that na was mainly employed by psychotherapists to mark a reproffer of interview topics(i.e.,an attempt to return to earlier topics),and a display of disalignment and disaffiliation with RHD topical divergence.These functions of na reflect the psychotherapists’ attempts to overcome communicative problems arising from RHD topical divergence,so as to ensure the achievement of the communicative goal.Thus,na can be interpreted as a compensatory strategy for dealing with RHD topical divergence on an interpersonal level.These findings not only expand our knowledge about the function spectrum of na,but also offer insights for RHD patients’ interlocutors to enhance conversational communication with RHD patients via the compensatory strategy.
文摘The present paper analyzes the strategic choices for learning Chinese by 300 Hungarian university students. The survey summarizes the most often used Chinese language learning strategies and verbal language learning strategies of Hungarian language learners one by one. With the help of the method of multidimensional scaling, the survey got to the result that the preference of the general language learning strategies is characterized by a strong opposition. In the case of the choice and use of three strategies--the social, the meta-cognitive and the cognitive strategies, language learners prefer a combined choice or non-choice. While in the use of the emotional, compensation and memorization strategies, a strong opposition emerges. Those using memorization strategies less prefer the emotional and the compensation strategies. This is true vice versa as well, those using emotional strategies, use memorization and compensation strategies less often. While the relation of the general language learning strategies was characterized by a certain opposition, in the use of the verbal strategies a strict continuity could be detected. Hungarian language learners consider the use of almost all verbal strategies with few exceptions to be successful in their communication. The results of the Variables path analysis with Partial Least-Squares Estimation （LVPLS） model revealed all those connections that structurally exist among the three exogen background latent variables （language level, language learner style and the ascriptive background） and the two endogen latent variables （the language learning strategies and the verbal strategies）. All of these latent variables measured with several manifest variables of the second exogen background variables, the language learning style showed the biggest affect to strategy use, this variable influences the successfulness of the learning of Chinese most strongly.
基金Supported by a grant from the National High Technology Research and Development Program of China (863 Program, No.2006AA010102)the National Natural Science Foundation of China (No.60872105).
文摘This paper presents an improved voice morphing algorithm based on Gaussian Mixture Model(GMM) which overcomes the traditional one in the terms of overly smoothed problems of the converted spectral and discontinuities between frames.Firstly, a maximum likelihood estimation for the model is introduced for the alleviation of the inversion of high dimension matrixes caused by traditional conversion function.Then, in order to resolve the two problems associated with the baseline, a codebook compensation technique and a time domain medial filter are applied.The results of listening evaluations show that the quality of the speech converted by the proposed method is significantly better than that by the traditional GMM method, and the Mean Opinion Score(MOS) of the converted speech is improved from 2.5 to 3.1 and ABX score from 38% to 75%.
文摘Power quality is a complex term that is defined by the legislation, but also as an obligation of the supplier and customer. The customer must return the negative effects of its consumers （taking reactive power, harmonic generation, phase unbalance） down to the prescribed limits. This primarily refers to the presence of non-linear consumers, leading to distortion of the basic parameters of voltage and current, in steady or transient conditions, and therefore the deformation of waveform. One way to reduce the negative feedback effects, especially with inductive loads, is the reactive energy compensation. The paper presents one of the solution for reactive power compensation, applied on the pumping station of public company ＂Waterworks and Sewerage---Bar＂, Bar.
文摘This paper studies the effect of different lengths of pre-task planning time on the frequency and accuracy of self-repairs for Chinese intermediate and advanced English learners.The findings reveal that the increased pre-task planning time strongly improves fluency and accuracy of self-repairs for both lexical and syntactic errors in the advanced group,but enhanced fluency and accuracy are not witnessed in the intermediate group as planning time increases.The differences are mainly due to the fact that some intermediate learners are not well equipped with the appropriate way of preparation for oral presentation tasks since some write down their ideas in Chinese.Thus errors will increasingly emerge in the transfer.Besides,they usually give priority to accuracy while neglecting fluency.
文摘The present study investigated the effects of explicit metapragmatic instruction on foreign language learners＇ performance of compliment responses （CRs）. Eighty-two non-English major students participated in this study. They were randomly assigned to two groups, an experimental group that received explicit metapragmatic instruction on compliment responses and a control group that did not. A pretest-posttest research design was adopted. The data were collected through a written discourse completion task （WDCT） with six scenarios concerning the topics of appearance, performance, and personality. The results revealed that learners who received explicit instruction dramatically decreased their use of Accept strategy and increased Combination （CB） strategy at the macro level; more specifically, a decrease in Appreciation and an increase in Accept ＋ Accept at the micro level. The learners of the control group made little progress in their performance. The study sheds light on pragmatics learning in an EFL setting and provides implications for pragmatics pedagogy.
