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KMID : 1022420110030030099
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Phonetics and Speech Sciences
2011 Volume.3 No. 3 p.99 ~ p.108
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Sample selection approach using moving window for acoustic analysis of pathological sustained vowels according to signal typing
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Lee Ji-Yeon
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Abstract
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The perturbation parameters like jitter, shimmer, and signal-to-noise ratio (SNR) are largely estimated in the particular segment from the subjective or whole portion of the given pathological voice signal although there are many possible regions to be able to analyze the voice signals. In this paper, the pathological voice signals were classified as type 1, 2, 3, or 4 according to narrow band spectrogram and the value differences of the perturbation parameters extracted in the subjective and entire portion tended to be getting bigger as from type 1 to type 4 signals. Therefore, sample selection method based on moving window to analyze type 2 and 3 signals as well as type 1 signals is proposed. Although type 3 signals cannot be analyzed using the perturbation analysis, the type 3 signals by selecting out the samples in which error count is less than 10 through moving window were analyzed. At present, there is no method to be able to analyze the type 4 signals. Future research will endeavor to determine the best way to evaluate such voices.
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KEYWORD
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Moving window, pertuibation parameter, signal typing, acoustic analysis, pathological voices, sample selection
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