It is possible to recognise a person by hearing his voice even if he is hidden behind a wall. This is due to the fact that his voice

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

We an recoganise a person just by listening his voice and without seeing him.HOw ?

You recognize your friend by hearing his voice on a telephone. Explain.

Which characteristic of sound, makes it possible to recognize a person by his voice without seeing him ?

A teacher in the class should keep the pitch of his voice

A person is standing on a rotating table with metal spheres in his hands. If he withdraws his hands to his chest, then the effect on his angular velocity will be.