Analysis and synthesis of Bangla Dental consonants

This paper describes in detail the analysis results of the Bangla dental consonants [t], [th], [d] and [dh] analyzed through the spectral estimation techniques in four long vowel contexts [a], [i], [o], and [u] for an accurate description of their acoustic characteristics and features and the differences between the corresponding cognate sounds. Various parameters like duration of closure/voice bar, duration of burst, voice onset time, duration of aspiration, rate of second formant transition and burst frequencies and amplitudes have been studied in details. For the synthesis of dental sounds, the source and vocal tract parameters of the synthesizer configuration were selected very carefully along with formant frequencies and their relative amplitudes besides the burst amplitude. The quality of synthetic speech was evaluated through subjective listening along with matching the spectra of synthetic speech with original speech.