A Study of Assisting Hearing-Impaired Students in Identifying Mandarin Tones by Using Modified Pitch...

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Transcript of A Study of Assisting Hearing-Impaired Students in Identifying Mandarin Tones by Using Modified Pitch...

  • A Study of Assisting Hearing-Impaired Students in Identifying Mandarin Tones by Using Modified Pitch ContoursAdviser: Dr. Yeou - Jiunn ChenPresenter: MING -DA LEEHsiao-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.

  • OutlineIntroductionPurposeMaterials and MethodsResultConclusionReferences

  • Introduction

    mandarin ?

    Tone ?

    fundamental frequency(F0)?

    Syllable?

  • 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.

  • Materials and Methods

    Participants 32 Normal adults4 SpeakerAge19~40 years oldFirst language is mandarin

  • Materials and Methods

  • Materials and Methods Marantz PMD201 recorder SHURE BG 2.1 microphone

  • Materials and MethodsSpeech re-synthesis 32 bit Creative sound blasterSampling frequency 22.05HzCspeechRemoved F0s rise and fall

  • Materials and MethodsPlay speech sounds

  • Result

  • Result

  • Result

  • Conclusion

    The F0-flattened stimuli significantly longer reaction time (RT)greater error rateslower intelligibility scores

  • PurposeUsing Modified Pitch Contours in hearing-Impaired Students ?

  • Materials and Methods26 children Mean age 13.6 years oldMean hearing loss right ear is 88dB 'left ear is 89dB

  • Materials and Methods Materials Y

  • Materials and Methods Voice Hearing detection system Voice modify system

  • Materials and Methods

  • Setting the voice fundamental frequency curve-Tseng ( 1990 )

    Expand the voice fundamental frequency curve-Liu (2007 )Materials and Methods

  • Materials and Methods

  • Materials and Methods low-pass filteringKeep the following 500hz

  • Materials and Methods

  • Result

  • Result

  • Result

  • ConclusionExpand thevoicefundamental frequencycurve and Expand the basebandfiltercurve better than the other four

  • ReferencesHsiao-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, 175196,.

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