Significance of Acoustic Parameter - RAP, PPQ, APQ- in Hoarseness

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J Korean Soc Laryngol Phoniatr Logop > Volume 6(1); 1995 > Article

Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 1995;6(1): 22-26.

애성환자에서 음향지표인 RAP, PPQ 및 APQ의 유용성

안철민, 이종혁, 강현국, 이용배

삼성의료원 강북삼성병원 이비인후과

Significance of Acoustic Parameter - RAP, PPQ, APQ- in Hoarseness

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ABSTRACT

Change of voice, espicially hoarseness show irregular vibration of vocal cord. So, computerized acoustic analysis has presented many acoustic parameters for objective evaluation of voice. We objectively investigated the vocal vibration of normal persons and hoarseness patients in Korea. The RAP(relative average perturbation), PPQ(pitch period perturbation quotient) and APQ(amplitude perturbation quotient) of normal persons were compared with that of hoarseness patients with multidimensional voice program for the possibility of distinguishing the pathologic vocal vibration from normal. Authors agree that RAP, PPQ and APQ showed interesting differences between the normal and the hoarseness patients by the multivariate statistical analysis. In conculusion, relative average perturbation, pitch period perturbation and amplitude perturbation quotient might be meangingful screening parameters distinguishing hoarseness patients from normal.

KEY WORDS： Acoustic parameter;Voice Analysis;RAP;PPQ;APQ;