Normative Data on the Speaking Fundamental Frequency Values of the Indian Bilingual Speakers: A Forensic Phonetic Study

The aim of the study is three-fold: 1) to obtain normative data on the speaking fundamental frequency (SFF) of Indian speakers, 2) to compare the SFF values of Indian speakers across seven different age groups (10-70 years) to see if any differences exist and 3) to explore if the language used (English and Telugu) has any effect on the SFF values. The study included 70 Indian speakers whose ages ranged from 10 to 70 years. The stimulus material comprised read passages and spontaneous speech samples in two languages (English and Telugu). The average SFF values were extracted using PRAAT software and the obtained values were compared across the different age groups chosen.