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A Study of Assisting Hearing-Impaired Students in Identifying Mandarin Tones by Using Modified Pitch Contours
Adviser: Dr. Yeou - Jiunn ChenPresenter: 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.
OutlineOutline
IntroductionIntroduction PurposePurpose Materials and MethodsMaterials and Methods ResultResult ConclusionConclusion ReferencesReferences
IntroductionIntroduction
mandarin ?mandarin ?
ToneTone ?
fundamental frequency(F0)?fundamental frequency(F0)?
Syllable?Syllable?
PurposePurpose
(1) (1) Investigation voice monotonous decrease of Investigation voice monotonous decrease of the degree of speech intelligibility.the degree of speech intelligibility.
(2) (2) Relatively monotonous voice of the three Relatively monotonous voice of the three two-syllable words after the identification of two-syllable words after the identification of impact.impact.
Materials and Methods Materials and Methods
一、一、 ParticipantsParticipants 32 32 Normal adultsNormal adults 4 Speaker4 Speaker Age19~40 years oldAge19~40 years old 。。 First languageFirst language is mandarinmandarin
Materials and Methods Materials and Methods
Materials and MethodsMaterials and Methods
Marantz PMD201 recorderMarantz PMD201 recorder SHURE BG 2.1 microphoneSHURE BG 2.1 microphone
Materials and MethodsMaterials and Methods
Speech re-synthesisSpeech re-synthesis 32 bit Creative sound blaster Sampling frequency 22.05Hz Cspeech
Removed F0’s rise and fallRemoved F0’s rise and fall
Materials and MethodsMaterials and Methods
Play speech sounds
subject
Heard&Write down Press the button
ResultResult
ResultResult
ResultResult
ConclusionConclusion TThe F0-flattened stimuli
significantly longer reaction time (RT) greater error rates lower intelligibility scores
PurposePurpose
Using Modified Pitch Contours in hearing-Impaired Students ?
Materials and MethodsMaterials and Methods
26 children Mean age 13.6 years old Mean hearing loss right ear is 88dB
'left ear is 89dB
Materials and Methods Materials and Methods
MaterialsMaterials 「ㄧ」、「ㄨ」、 「 「ㄧ」、「ㄨ」、 「 Y Y 」 、「ㄞ」、「ㄟ」、」 、「ㄞ」、「ㄟ」、
「ㄠ」、「ㄡ」 。「ㄠ」、「ㄡ」 。
Materials and Methods Materials and Methods
Voice Hearing detection systemVoice Hearing detection system Voice modify systemVoice modify system
Materials and Methods Materials and Methods
Setting the voice fundamental Setting the voice fundamental frequency curve-frequency curve-Tseng ( 1990 )Tseng ( 1990 )
Expand the voice fundamental Expand the voice fundamental frequency curve-frequency curve-Liu (2007 )Liu (2007 )
Materials and Methods Materials and Methods
Materials and MethodsMaterials and Methods
Materials and Methods Materials and Methods
「「 low-pass filtering 」」 Keep the following 500hzKeep the following 500hz
Materials and MethodsMaterials and Methods
Play speech sounds
subject
Used mouse to point out the print
ResultResult
ResultResult
ResultResult
ConclusionConclusion
Expand the voice fundamental Expand the voice fundamental frequency curve and Expand the frequency curve and Expand the
baseband filter curve better than the baseband filter curve better than the other fourother four
ReferencesReferences 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 .