Lakshmi Prasanna P*
The acoustic characteristics of vowels provide vital information on frequency, intensity, formant frequencies etc. The vocal tract is responsible for frequency shaping of the signal from the vocal folds, which is crucial for formant frequencies. Using the first two formant frequencies, the current study was aimed to check the vowel space in various disguise voice. A 35-year-old Telugu native speaker participated in the study. Two types of recordings were made one is by using PRAAT and the other one is by using voice changer app. The participant was asked to phonate three vowels (a, i and u). Formants (F1 and F2) were measured by using PRAAT software. The obtained data was used for further analysis. The paired sample t test reveals that there is a high significant difference between original with women & girl type voices for the first formant. Second formant showed significant difference between original and women type voice. Both F1 and F2 comparisons had a negative mean score, which might be attributed to the original voice’s lower formant frequencies versus the disguised voices higher formants. Overall, the presents study found that the formant frequencies for “man” and “boy” voice types were higher after using the voice changer app, indicating that they were more similar to the original female voice. The vowel space varies and is higher in disguised voices than in normal sounds, despite the fact that all the voices are from the same person. When comparing the regular voice to other disguised voices, the current study findings, according to the author, results can aid in understanding the formants. The formant frequency range is also changed by the gadgets and numerous voice changer apps, which makes it higher than usual.
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