What determines the strength of the pitch of the voice?

The characteristic of the voice depends on many factors. But the main role is played by the human vocal cords and their development. Children’s vocal cords are different from adults. In addition, the vocal cords of men are different from the vocal cords of women. Their structure determines the timbre of the voice and the pitch of the voice. The voice itself appears due to the presence of air currents, which often comes out of the lungs. But we can speak while inhaling, but it is quite difficult and the voice will be very weak due to the peculiarities of the vocal cords.