VoicesVoicesPriyankoo SarmahPriyankoo Sarmah

Dept. of HSSDept. of HSS

InterestsInterestsSoundsSounds

Writing Systems Writing Systems

SoundsSoundsVoices and Noises Voices and Noises

Human hearing range 20-20000 HzHuman hearing range 20-20000 Hz

What is the average frequency of speech?What is the average frequency of speech?

30 Hz 19000 Hz30 Hz 19000 Hz 5000 Hz5000 Hz 9000 9000 HzHz

Can we hear small differences?Can we hear small differences?350 Hz350 Hz 351 Hz351 Hz 352 Hz352 Hz 353 Hz353 Hz 354 354 HzHz 356 Hz356 Hz

JND (just noticeable distance)JND (just noticeable distance)

Sound PerceptionSound PerceptionKiki and BubaKiki and Buba

Sound PerceptionSound Perception

Sound PerceptionSound Perception

McGurk’s Effect

Sound ProductionSound ProductionHow many languages are there in the How many languages are there in the world?world?

How many sounds are there in these How many sounds are there in these languages?languages?

Sound ProductionSound ProductionSome languages exploit the speech Some languages exploit the speech mechanism very well. mechanism very well.

Chinese Tones use F0 to differentiate Chinese Tones use F0 to differentiate meanings among wordsmeanings among words

‘‘to hang over’to hang over’ ‘to answer’ ‘to answer’ ‘to hit’‘to hit’‘big’‘big’

Xhosa uses ‘clicks’ Xhosa uses ‘clicks’

‘‘to grind’to grind’ ‘to break stones’‘to break stones’ ‘peace’‘peace’

Using more than Using more than one pitchone pitch

ContactContactpriyankoo@iitg.ernet.inpriyankoo@iitg.ernet.in