从语音生态学角度出发,选取江苏南通方言地区人们的普通话为研究对象,利用BLP(Bilingual Language Profile)问卷的科学计算方法分析了当地人普通话语音习得的语音生态背景。同时,结合听辨实验和发声分析,探讨了江苏南通方言地区普通话...从语音生态学角度出发,选取江苏南通方言地区人们的普通话为研究对象,利用BLP(Bilingual Language Profile)问卷的科学计算方法分析了当地人普通话语音习得的语音生态背景。同时,结合听辨实验和发声分析,探讨了江苏南通方言地区普通话语音的发声特点,归纳出反映该方言地区普通话语音面貌的发声偏误类型及声学特征,为方言地区学习者普通话的研究与分析提供了一种新的研究视角。展开更多
In order to investigate the influence of dummy head on measuring speech intelligi- bility, the objective and subjective speech intelligibility evaluation experiments were respectively carried out for different spatial...In order to investigate the influence of dummy head on measuring speech intelligi- bility, the objective and subjective speech intelligibility evaluation experiments were respectively carried out for different spatial configurations of a target source and a noise source in the horizontal plane. The differences between standard STIPA measured without a dummy head and binaural STIPA measured with a dummy head were compared and the correlation of subjective speech intelligibility and objective STIPA was analyzed. It is showed that the position of sound source affects significantly on binaural STIPA and subjective intelligibility measured by a dummy head or measured in a real-life scenario. The standard STIPA is closer to the lower value of the two binaural STIPA values. The speech intelligibility is higher for a single ear which is on the same side with the target source or on the other side of the noise source. Binaural speech intelligibility is always the lowest when both target and noise sources are at the same place but once apart the speech intelligibility will increase sharply. It is also found that the subjective intelligibility measured by a dummy head or measured in a real-life scenario is uncorrelated with standard STIPA, but correlated highly with STIPA measured with a dummy head. The subjective intelligibility of one single ear is correlated highly with STIPA measured at the same ear, and the binaural speech intelligibility is in well agreement with the higher value of the two binaural STIPA values.展开更多
By analyzing the differences between binaural recording and real listening, it was deduced that there were some unrevealed auditory localization clues, and the sound pressure distribution pattern at the entrance of ea...By analyzing the differences between binaural recording and real listening, it was deduced that there were some unrevealed auditory localization clues, and the sound pressure distribution pattern at the entrance of ear canal was probably a clue. It was proved through the listening test that the unrevealed auditory localization clues really exist with the reduction to absurdity. And the effective frequency bands of the unrevealed localization clues were in- duced and summed. The result of finite element based simulations showed that the pressure distribution at the entrance of ear canal was non-uniform, and the pattern was related to the direction of sound source. And it was proved that the sound pressure distribution pattern at the entrance of the ear canal carried the sound source direction information and could be used as an unrevealed localization clue. The frequency bands in which the sound pressure distribution patterns had significant differences between front and back sound source directions were roughly matched with the effective frequency bands of unrevealed localization clues obtained from the listening tests. To some extent, it supports the pattern could be a kind of unrevealed auditory hypothesis that the sound pressure distribution localization clues.展开更多
The just noticeable difference （JND） of the reverberance was tested using the constant-stimulus, method. Some factors that may influence the tested results are analyzed to validate the experimental data. The test ma...The just noticeable difference （JND） of the reverberance was tested using the constant-stimulus, method. Some factors that may influence the tested results are analyzed to validate the experimental data. The test materials are the Chinese instrumental music. Three subjects groups were tested, including the audio technician group, the students from audio engineering department and a group of postgraduates majoring in acoustics. It is found that the value of JND of reverberance is about 25%. The difference possibly caused by the professional training and experience of different subjects groups is noticeable, but the difference caused by different music motifs is insignificant.展开更多
In order to investigate the group characteristics of Putonghua monophthong formants, the tokens of 90 female students were surveyed. The formants were measured using LPC method. The averaged values and spread of forma...In order to investigate the group characteristics of Putonghua monophthong formants, the tokens of 90 female students were surveyed. The formants were measured using LPC method. The averaged values and spread of formant frequencies were given with statistical meaning. The results show the difference from the previous measurements by other researchers decades ago. For all monophthongs, F4/F3 and F5/F4 are generally around 1.4. To discriminate monophthongs, F2/F1 and F3/F2 are possibly the two new parameters besides the first three formants.展开更多
文摘从语音生态学角度出发,选取江苏南通方言地区人们的普通话为研究对象,利用BLP(Bilingual Language Profile)问卷的科学计算方法分析了当地人普通话语音习得的语音生态背景。同时,结合听辨实验和发声分析,探讨了江苏南通方言地区普通话语音的发声特点,归纳出反映该方言地区普通话语音面貌的发声偏误类型及声学特征,为方言地区学习者普通话的研究与分析提供了一种新的研究视角。
基金supported by the National Nature Science Foundation of China(11204278)
文摘In order to investigate the influence of dummy head on measuring speech intelligi- bility, the objective and subjective speech intelligibility evaluation experiments were respectively carried out for different spatial configurations of a target source and a noise source in the horizontal plane. The differences between standard STIPA measured without a dummy head and binaural STIPA measured with a dummy head were compared and the correlation of subjective speech intelligibility and objective STIPA was analyzed. It is showed that the position of sound source affects significantly on binaural STIPA and subjective intelligibility measured by a dummy head or measured in a real-life scenario. The standard STIPA is closer to the lower value of the two binaural STIPA values. The speech intelligibility is higher for a single ear which is on the same side with the target source or on the other side of the noise source. Binaural speech intelligibility is always the lowest when both target and noise sources are at the same place but once apart the speech intelligibility will increase sharply. It is also found that the subjective intelligibility measured by a dummy head or measured in a real-life scenario is uncorrelated with standard STIPA, but correlated highly with STIPA measured with a dummy head. The subjective intelligibility of one single ear is correlated highly with STIPA measured at the same ear, and the binaural speech intelligibility is in well agreement with the higher value of the two binaural STIPA values.
基金supported by the Science and Engineering Project of Communication University of China(3132016XNG1625)
文摘By analyzing the differences between binaural recording and real listening, it was deduced that there were some unrevealed auditory localization clues, and the sound pressure distribution pattern at the entrance of ear canal was probably a clue. It was proved through the listening test that the unrevealed auditory localization clues really exist with the reduction to absurdity. And the effective frequency bands of the unrevealed localization clues were in- duced and summed. The result of finite element based simulations showed that the pressure distribution at the entrance of ear canal was non-uniform, and the pattern was related to the direction of sound source. And it was proved that the sound pressure distribution pattern at the entrance of the ear canal carried the sound source direction information and could be used as an unrevealed localization clue. The frequency bands in which the sound pressure distribution patterns had significant differences between front and back sound source directions were roughly matched with the effective frequency bands of unrevealed localization clues obtained from the listening tests. To some extent, it supports the pattern could be a kind of unrevealed auditory hypothesis that the sound pressure distribution localization clues.
基金supported by the National Natural Science Foundation of China(10874155,10574100)
文摘The just noticeable difference （JND） of the reverberance was tested using the constant-stimulus, method. Some factors that may influence the tested results are analyzed to validate the experimental data. The test materials are the Chinese instrumental music. Three subjects groups were tested, including the audio technician group, the students from audio engineering department and a group of postgraduates majoring in acoustics. It is found that the value of JND of reverberance is about 25%. The difference possibly caused by the professional training and experience of different subjects groups is noticeable, but the difference caused by different music motifs is insignificant.
基金This work was supported by the Research Fund from SARFT (BG0305).
文摘In order to investigate the group characteristics of Putonghua monophthong formants, the tokens of 90 female students were surveyed. The formants were measured using LPC method. The averaged values and spread of formant frequencies were given with statistical meaning. The results show the difference from the previous measurements by other researchers decades ago. For all monophthongs, F4/F3 and F5/F4 are generally around 1.4. To discriminate monophthongs, F2/F1 and F3/F2 are possibly the two new parameters besides the first three formants.
