Question

what is the name of the strings in the human voice box which vibrate to produce sond

Answer 1

The vocal folds, also known commonly as vocal cords or voice reeds, are composed of twin infoldings of mucous membrane stretched horizontally, from back to front, across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation.

Answer 2

there is larynx which produces sound