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KMID : 1022420140060020003
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Phonetics and Speech Sciences
2014 Volume.6 No. 2 p.3 ~ p.8
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Measuring Correlation between Mental Fatigues and Speech Features
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Kim Jung-In
Kwon Chul-Hhong
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Abstract
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This paper deals with how mental fatigue has an effect on human voice. For this a monotonous task to increase thefeeling of the fatigue and a set of subjective questionnaire for rating the fatigue were designed. From the experiments thedesigned task was proven to be monotonous based on the results of the questionnaire responses. To investigate a statisticalrelationship between speech features extracted from the collected speech data and fatigue, the T test for two-related-sampleswas used. Statistical analysis shows that speech parameters deeply related to the fatigue are the first formant bandwidth,Jitter, H1-H2, cepstral peak prominence, and harmonics-to-noise ratio. According to the experimental results, it can be seenthat voice is changed to be breathy as mental fatigue proceeds.
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KEYWORD
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mental fatigue, monotonous task, speech features, correlation
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