To analyse and identify different parameters of normal human voices

Abstract

Background & Methods: The aim of the study is to analyse & identify different parameters of normal human voices. Only quality samples in terms of uniformity of volume & pitch were available because of technical reasons. The 3 sec sustained vowels were then extracted in the spectrogram to get the most stable & uniform middle 1 sec segment.
Results: Out of 200 voices, the number of male voice sample size was 46% & female voices were 54%.
Conclusion: Voice can be objectively analysed using Acoustic Parameters like mean Pitch, Jitter, Shimmer & Harmonic Noise Ratio. Most of the studies show that normal voice parameters depend on gender, region, methodology of the voice collection. Voices can be
objectively analysed using acoustic parameters like mean pitch, jitter, shimmer & harmonic to noise ratio. A large database yields more reliable normative parameters. Institutions should develop their own standard protocol for selection of subjects, recording of voices & their analysis.