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A Study of Assisting Hearing-Impaired Students in Identifying Mandarin Tones by Using Modified Pitch Contours Adviser: Dr. Yeou - Jiunn Chen Presenter: MING - DA LEE Hsiao-chuan wang (2010 )A Study of Assisting Hearing-Impaired Students inIdentifying Mandarin Tones by Using Modified Pitch Contours and Low-Pass Filtering. Bulletin of Special Education, 35(3), 77-101Journal of the Speech, Languagen, and Hearing Research.
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Outline Introduction Purpose Materials and Methods Result Conclusion References
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Introduction mandarin ? Tone Tone ? fundamental frequency(F0)? Syllable?
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Purpose (1) Investigation voice monotonous decrease of the degree of speech intelligibility. (2) Relatively monotonous voice of the three two-syllable words after the identification of impact.
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Materials and Methods 一、 Participants 32 Normal adults 32 Normal adults 4 Speaker 4 Speaker Age19~40 years old 。 Age19~40 years old 。 First languagemandarin First language is mandarin
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Materials and Methods
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Marantz PMD201 recorder SHURE BG 2.1 microphone
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Materials and Methods Speech re-synthesis 32 bit Creative sound blaster Sampling frequency 22.05Hz Cspeech Removed F0’s rise and fall
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Materials and Methods Play speech sounds subject Heard&Write downPress the button
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Result
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Result
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Result
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Conclusion T T he F0-flattened stimuli significantly longer reaction time (RT) greater error rates lower intelligibility scores
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Purpose Using Modified Pitch Contours in hearing- Impaired Students ?
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Materials and Methods 26 children Mean age 13.6 years old Mean hearing loss right ear is 88dB 'left ear is 89dB
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Materials and Methods Materials 「ㄧ」、「ㄨ」、 「 Y 」 、「ㄞ」、「ㄟ」、 「ㄠ」、「ㄡ」 。 「ㄧ」、「ㄨ」、 「 Y 」 、「ㄞ」、「ㄟ」、 「ㄠ」、「ㄡ」 。
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Materials and Methods Voice Hearing detection system Voice modify system
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Materials and Methods
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Setting the voice fundamental frequency curve- Tseng ( 1990 ) Expand the voice fundamental frequency curve- Liu (2007 ) Materials and Methods
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「」 「 low-pass filtering 」 Keep the following 500hz Keep the following 500hz
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Materials and Methods Play speech sounds subject Used mouse to point out the print
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Result
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Result
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Result
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Conclusion Expand the voice fundamental frequency curve and Expand the Expand the voice fundamental frequency curve and Expand the baseband filter curve better than the other four baseband filter curve better than the other four
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References Hsiao-chuan wang ( 2010 )A Study of Assisting Hearing-Impaired Students inIdentifying Mandarin Tones by Using Modified Pitch Contours and Low-Pass Filtering. Bulletin of Special Education, 35(3), 77- 101Journal of the Speech, Languagen, and Hearing Research. Jing-Yi Jeng(2004) The influence of Monotone on Mandarin Lexical Identification and Speech Intelligibility, 38, 175 ∼ 196, 南師學報.
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