Relative Weights of Temporal Envelope Cues in Different Frequency Regions for Mandarin Vowel, Consonant, and Lexical Tone Recognition
Objectives: Mandarin-speaking users of cochlear implants (CI) perform poorer than their English counterpart. This may be because present CI speech coding schemes are largely based on English. This study aims to evaluate the relative contributions of temporal envelope (E) cues to Mandarin phoneme (in...
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Frontiers Media S.A.
2021
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oai:doaj.org-article:cadf6e83893a41958523b13dc09ad2c32021-12-02T11:41:42ZRelative Weights of Temporal Envelope Cues in Different Frequency Regions for Mandarin Vowel, Consonant, and Lexical Tone Recognition1662-453X10.3389/fnins.2021.744959https://doaj.org/article/cadf6e83893a41958523b13dc09ad2c32021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fnins.2021.744959/fullhttps://doaj.org/toc/1662-453XObjectives: Mandarin-speaking users of cochlear implants (CI) perform poorer than their English counterpart. This may be because present CI speech coding schemes are largely based on English. This study aims to evaluate the relative contributions of temporal envelope (E) cues to Mandarin phoneme (including vowel, and consonant) and lexical tone recognition to provide information for speech coding schemes specific to Mandarin.Design: Eleven normal hearing subjects were studied using acoustic temporal E cues that were extracted from 30 continuous frequency bands between 80 and 7,562 Hz using the Hilbert transform and divided into five frequency regions. Percent-correct recognition scores were obtained with acoustic E cues presented in three, four, and five frequency regions and their relative weights calculated using the least-square approach.Results: For stimuli with three, four, and five frequency regions, percent-correct scores for vowel recognition using E cues were 50.43–84.82%, 76.27–95.24%, and 96.58%, respectively; for consonant recognition 35.49–63.77%, 67.75–78.87%, and 87.87%; for lexical tone recognition 60.80–97.15%, 73.16–96.87%, and 96.73%. For frequency region 1 to frequency region 5, the mean weights in vowel recognition were 0.17, 0.31, 0.22, 0.18, and 0.12, respectively; in consonant recognition 0.10, 0.16, 0.18, 0.23, and 0.33; in lexical tone recognition 0.38, 0.18, 0.14, 0.16, and 0.14.Conclusion: Regions that contributed most for vowel recognition was Region 2 (502–1,022 Hz) that contains first formant (F1) information; Region 5 (3,856–7,562 Hz) contributed most to consonant recognition; Region 1 (80–502 Hz) that contains fundamental frequency (F0) information contributed most to lexical tone recognition.Zhong ZhengZhong ZhengKeyi LiGang FengYang GuoYinan LiYinan LiLili XiaoLili XiaoChengqi LiuChengqi LiuShouhuan HeZhen ZhangZhen ZhangDi QianYanmei FengYanmei FengFrontiers Media S.A.articletemporal envelope cuesfrequency regionMandarinvowelconsonanttoneNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571ENFrontiers in Neuroscience, Vol 15 (2021) |
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| topic |
temporal envelope cues frequency region Mandarin vowel consonant tone Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 |
| spellingShingle |
temporal envelope cues frequency region Mandarin vowel consonant tone Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Zhong Zheng Zhong Zheng Keyi Li Gang Feng Yang Guo Yinan Li Yinan Li Lili Xiao Lili Xiao Chengqi Liu Chengqi Liu Shouhuan He Zhen Zhang Zhen Zhang Di Qian Yanmei Feng Yanmei Feng Relative Weights of Temporal Envelope Cues in Different Frequency Regions for Mandarin Vowel, Consonant, and Lexical Tone Recognition |
| description |
Objectives: Mandarin-speaking users of cochlear implants (CI) perform poorer than their English counterpart. This may be because present CI speech coding schemes are largely based on English. This study aims to evaluate the relative contributions of temporal envelope (E) cues to Mandarin phoneme (including vowel, and consonant) and lexical tone recognition to provide information for speech coding schemes specific to Mandarin.Design: Eleven normal hearing subjects were studied using acoustic temporal E cues that were extracted from 30 continuous frequency bands between 80 and 7,562 Hz using the Hilbert transform and divided into five frequency regions. Percent-correct recognition scores were obtained with acoustic E cues presented in three, four, and five frequency regions and their relative weights calculated using the least-square approach.Results: For stimuli with three, four, and five frequency regions, percent-correct scores for vowel recognition using E cues were 50.43–84.82%, 76.27–95.24%, and 96.58%, respectively; for consonant recognition 35.49–63.77%, 67.75–78.87%, and 87.87%; for lexical tone recognition 60.80–97.15%, 73.16–96.87%, and 96.73%. For frequency region 1 to frequency region 5, the mean weights in vowel recognition were 0.17, 0.31, 0.22, 0.18, and 0.12, respectively; in consonant recognition 0.10, 0.16, 0.18, 0.23, and 0.33; in lexical tone recognition 0.38, 0.18, 0.14, 0.16, and 0.14.Conclusion: Regions that contributed most for vowel recognition was Region 2 (502–1,022 Hz) that contains first formant (F1) information; Region 5 (3,856–7,562 Hz) contributed most to consonant recognition; Region 1 (80–502 Hz) that contains fundamental frequency (F0) information contributed most to lexical tone recognition. |
| format |
article |
| author |
Zhong Zheng Zhong Zheng Keyi Li Gang Feng Yang Guo Yinan Li Yinan Li Lili Xiao Lili Xiao Chengqi Liu Chengqi Liu Shouhuan He Zhen Zhang Zhen Zhang Di Qian Yanmei Feng Yanmei Feng |
| author_facet |
Zhong Zheng Zhong Zheng Keyi Li Gang Feng Yang Guo Yinan Li Yinan Li Lili Xiao Lili Xiao Chengqi Liu Chengqi Liu Shouhuan He Zhen Zhang Zhen Zhang Di Qian Yanmei Feng Yanmei Feng |
| author_sort |
Zhong Zheng |
| title |
Relative Weights of Temporal Envelope Cues in Different Frequency Regions for Mandarin Vowel, Consonant, and Lexical Tone Recognition |
| title_short |
Relative Weights of Temporal Envelope Cues in Different Frequency Regions for Mandarin Vowel, Consonant, and Lexical Tone Recognition |
| title_full |
Relative Weights of Temporal Envelope Cues in Different Frequency Regions for Mandarin Vowel, Consonant, and Lexical Tone Recognition |
| title_fullStr |
Relative Weights of Temporal Envelope Cues in Different Frequency Regions for Mandarin Vowel, Consonant, and Lexical Tone Recognition |
| title_full_unstemmed |
Relative Weights of Temporal Envelope Cues in Different Frequency Regions for Mandarin Vowel, Consonant, and Lexical Tone Recognition |
| title_sort |
relative weights of temporal envelope cues in different frequency regions for mandarin vowel, consonant, and lexical tone recognition |
| publisher |
Frontiers Media S.A. |
| publishDate |
2021 |
| url |
https://doaj.org/article/cadf6e83893a41958523b13dc09ad2c3 |
| work_keys_str_mv |
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