Puberty voice changes in boys are marked by a deepening of the voice, often accompanied by cracking or breaking as the larynx and pharynx grow and change. 

Symptoms in Boys:

The voice may sound squeaky, croaky, or crack/break as the voice adjusts to its new size. 

Cause of change of voice in male.

Children and girls need shouting for their protection 

Adult boys need only development of their body and there are ready to fight. So their voice change to pharyngea voice.

The overall pitch of the voice lowers, often by an octave or more in males. 

Laryngeal Prominence (Adam's Apple):

In males, the larger larynx may become more prominent as a bump in the front of the throat. Some boys knowingly or unknowingly continue the same child voice. That is caed puberphonia.