Vocal Acoustic Analysis in Elementary School Teachers

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DEHGHAN ALI

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Jundishapur Scientific Medical Journal Year:2020 | Volume:19 | Issue:6 Page(s): 565-575

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Information Journal Paper

Title

Vocal Acoustic Analysis in Elementary School Teachers

Author(s)

DEHGHAN ALI | Issue Writer Certificate

Keywords

Voice acoustic analysisQ1

Elementary school teachersQ1

Harmonic-to-noise ratioQ2

Fundamental frequencyQ1

JitterQ1

ShimmerQ1

VoiceQ1

LarynxQ2

Abstract

and Objecitve: Teachers often speak loudly for long periods in noisy classroom environments without adequate vocal fold tissue rest or recovery. This is a specific occupational group with numerous economic, social, and health problem. The aim of the present study was to examine a number of vocal acoustic parameters in a group of male and female Elementary school teachers in comparison to their normal peers. Subjects and Methods: Fifteen female and 15 male primary schoolteachers in the age range of 35-40 years with 15 years teaching experience volunteered to participate in the study. The control group consisted of 30 non-teacher adults aged 35-40 years (15 men and 15 women). Recordings and audio signal analyses were carried out using Praat software. Each subject was asked to sustain the vowel /^a/ using habitual and constant vocal pitch, loudness, and quality for at least 5 seconds. Five tokens from each subject were obtained. Results: For the male subjects, the results indicated no significant difference (at the 0. 05 level) for each variable between the two groups. However, for the female subjects, t tests showed significant differences between the teachers and the non-teacher controls in all parameters at the 0. 01 level. The female teachers had significantly lower F0 (190. 27 Hz) than the control group (236. 32 Hz). Also, for the perturbation acoustic parameters (Jitter% and Shimmer%), the female teacher group had significantly higher values than their corresponding control group. Similarly, the harmonics-to-noise ratio (HNR) measures for the female teacher population were significantly lower than for their corresponding control group. Conclusion: The results indicate that female teachers appear to be more susceptible to Voice stability change than the male teachers. Also, acoustic analysis of Voice for teachers may significantly contribute to the objective Voice examination of this group. Further investigations of factors that promote individual susceptibility to vocal stability are necessary.

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APA: Copy

DEHGHAN, ALI. (2020). Vocal Acoustic Analysis in Elementary School Teachers. JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL, 19(6 ), 565-575. SID. https://sid.ir/paper/416194/en

Vancouver: Copy

DEHGHAN ALI. Vocal Acoustic Analysis in Elementary School Teachers. JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL[Internet]. 2020;19(6 ):565-575. Available from: https://sid.ir/paper/416194/en

IEEE: Copy

ALI DEHGHAN, “Vocal Acoustic Analysis in Elementary School Teachers,” JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL, vol. 19, no. 6 , pp. 565–575, 2020, [Online]. Available: https://sid.ir/paper/416194/en

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