Question

Why do women have shriller voice then men?

Answer 1

The shrillness of a sound depends upon its frequency and pitch, the higher the pitch the shriller the sound.    As the sounds produced by their vocal chords is naturally higher than men. So the sounds produced from the voices of women are shriller than men.

Answer 2

because their vocal cord is created as such and women vocal cord is thinner and whereas mam has broader..