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KMID : 0917520010080030201
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Journal of Speech Sciences
2001 Volume.8 No. 3 p.201 ~ p.208
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The Validity Analysis between Measurement Method of Subglottic Air Pressure
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Abstract
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The purpose of the study was to examine a method most pertinent to measure subglottic air pressure. Subglottic air pressure and loudness analyses were performed on vowels /a/, /i/ and consonant /p/ in 12 norrnal subjects using Aerophone Ⅱ voice function. The experimental contexts were, therefore, /i;pi;pi;/ and /a;pa;pa;/. The subjects produced the intervocalic /p/ in 4 different situations: 1) /i;pi;pi;/ with voiceless /p/, 2) /i;pi;pi;/ with voiced /p/, 3) /a;pa;pa;/ with voiceless /p/, and 4) /a;pa;pa;/ with voiced /p/, A-t-test and a correlation analysis revealed the following results. First, when we measured subglottic air pressure by /i;pi;pi;/, voiceless /p/ was significantly different from voiced /p/. Second, when we measured subglottic air pressure by /a;pa;pa;/, voiceless /p/ was significantly different from voiced /p/. Therefore, it was concluded that voiceless /p/ produced more accurate subglottic air pressure and clinicians needed to have patients produce accurate /p/ when measuring subglottic air pressure using Aerophone Ⅱ.
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