LANGUAGE IN INDIA

Strength for Today and Bright Hope for Tomorrow

Volume 16:8 August 2016
ISSN 1930-2940

Managing Editor: M. S. Thirumalai, Ph.D.
Editors: B. Mallikarjun, Ph.D.
         Sam Mohanlal, Ph.D.
         B. A. Sharada, Ph.D.
         A. R. Fatihi, Ph.D.
         Lakhan Gusain, Ph.D.
         Jennifer Marie Bayer, Ph.D.
         G. Baskaran, Ph.D.
         L. Ramamoorthy, Ph.D.
         C. Subburaman, Ph.D. (Economics)
         N. Nadaraja Pillai, Ph.D.
         Renuga Devi, Ph.D.
         Soibam Rebika Devi, M.Sc., Ph.D.
Assistant Managing Editor: Swarna Thirumalai, M.A.

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Acoustic Characteristics of School Children
Before and After Class Sessions

Vishnu V.K., Sreelakshmi R., and Nandhu S Mohan

Abstract

Vocal abusive behaviors are frequently observed in school going children especially yelling and screaming. The participants of present study were 50 typical school going children attending fifth and sixth grade. Acoustic analyses were done before and after class sessions using Praat software. While comparing the acoustic parameters before and after class sessions, there were differences across parameters but was not statistically significant.

Keywords: acoustic analysis, school children, vocal abuse.

Vocal Abuses, Misuses, and Voice Disorders

The mechanism for generating the human voice can be subdivided into three parts; the lungs, the vocal folds within the larynx, and the articulators. The lung (the pump) must produce adequate airflow and air pressure to vibrate vocal folds (this air pressure is the fuel of the voice). The vocal folds (vocal cords) are a vibrating valve that chops up the airflow from the lungs into audible pulses that form the laryngeal sound source. The muscles of the larynx adjust the length and tension of the vocal folds to ‘fine-tune’ pitch and tone. The articulators (the parts of the vocal tract above the larynx consisting of tongue, palate, cheek, lips, etc.) articulate and filter the sound emanating from the larynx and to some degree can interact with the laryngeal airflow to strengthen it or weaken it as a sound source.

Vocal abuse is any behavior or occurrence that strains or injures the vocal folds. This may include excessive talking, throat clearing, coughing, inhaling irritants, smoking, screaming, or yelling. Vocal misuse is improper voice usage such as speaking too loudly or at an abnormally high or low pitch. Frequent vocal abuse and misuse can damage the vocal folds and cause temporary or permanent changes in vocal function, voice quality, and possible loss of voice.

This is only the beginning part of the article. PLEASE CLICK HERE TO READ THE ENTIRE ARTICLE IN PRINTER-FRIENDLY VERSION.

Sreelakshmi R.
Lecturer
Dr. M. V. Shetty College of Speech and Hearing
Mangalore 575015
Karnataka
India
lakshmilegacy.r@gmail.com

Nandhu S Mohan
Audiologist
Santhwana hospital
Trivandrum
India
smnandhu4803@gmail.com

Vishnu,V.K.
Clinical Supervisor
Dr. M. V. Shetty College of Speech and Hearing
Mangalore 575015
Karnataka
India
vishnuaslp@gmail.com
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