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KMID : 0917520030100030213
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Journal of Speech Sciences
2003 Volume.10 No. 3 p.213 ~ p.224
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Comparison of Speaker´s Source Characteristics in Different Recording Environments by Using Phonation Type Index k
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Abstract
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Spoken sound includes not only speaker´s source but the characteristics of vocal tract and speech radiation. This paper is based on the theory of Park[1], who proposes the Phonation Type Index k; a variable that shows the characterisic of speaker´s source excluding those of speaker´s vocal tract and speech radiation. With Park´s theory, we collect data by changing recording environments and expanding experimental data, and analyze the data collected to see whether or not the PTI k shows good discriminating power as a variable for speaker recognition. In the experiment, we repeatedly record 8 sentences ten times for each of 5 males in the environment of a recording room and an office, extract PTI k for each speaker, and measure the discriminating power for each speaker by using the value of PTI k. The result shows that PTI k has the excellent discriminating power of speakers. We also confirm that, even if the recording environment is changed, PTI k shows similar results.
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