IJSR - International Journal of Scientific Research

DR. NIRALI CHAUHAN; DR.MUFEED CM; DR. JINESH SHAH; DR.TAPAN NAGPAL; DR. JAY KODINARIYA; DR.ROHAN AMIN

Volume : VI, Issue : X, October - 2017

A Study of Acoustic Parameters of Normal Voice in Medical Undergraduate Students

Dr. Nirali Chauhan, Dr. Mufeed Cm, Dr. Jinesh Shah, Dr. Tapan Nagpal, Dr. Jay Kodinariya, Dr. Rohan Amin

Abstract :

Introduction: The study of normative data of voice is very important to aid in the identification of pathological voices. Aim: To establish a database of normal acoustic parameters in medical undergraduate students. Materials & Method: The study was carried out at the Department of Otorhinolaryngology, on 200 medical undergraduates of both sexes, aged from 18 to 25 years. All were subjected to computerized acoustic analysis using FONOS software. The analyses of the vocal parameters were carried out with the sustained /a/ vowel. The studied acoustic parameters were the fundamental frequency, shimmer and jitter disturbance measures, and the harmonic/noise ratios. Results: The group means (standard deviations) for males and females for fundamental frequency were 150 (39.03) and 208 (44.78) respectively. Jitter (SD) for males and females were 2.54 (3.11) and 2.21 (3.14) respectively. Shimmer means (SD) for males and females were 0.90 (0.80) and 0.92 (1.13) respectively. HNR (SD) for males and females were 6.01 (4.57) and 5.30 (5.03) respectively. Conclusion: The significant difference in the fundamental frequency average values in function of gender, found in the present study was expected, since it is influenced by the length of the vocal folds, which is longer in males. This difference has been often pointed out in the literature.