How is sound produced by Humans

How is sound produced by Humans

It is produced by voicebox (called larynx)

It is at upper end of windpipe

There are 2 vocal cords attached to it

There is narrow gap between them from where air can pass

Process followed

When we are not talking, vocal cords are far apart from each other

But when we start talking, vocal cords come together leaving only a narrow gap

Air passed through this narrow gap in vocal cord

This makes vocal cords vibrate and sound is produced

How does voice depends upon length of vocal cords?

In men, vocal cords are long (20 mm in men), producing heavy voice

In women and children, vocal cords are shorter (15 mm in women), producing shrill voice