When it starts cracking(squeaking).
Yes, any paediatrician can tell you that a boys voice can change several times throughout puberty.
I am not sure what you are asking here, are you wondering how you can tell if a voice (for example, over the phone) is a boy's voice or a girl's voice or are you enquiring about a boy's voice changing in pitch (breaking) during puberty?
for a boy his voice gets lower. for a girl her voice also gets lower Boys voices may change gently or suddenly during Puberty, some not at all. The larynx grows longer and stretches the muscles in the throat causing the voice to go lower in tone.
the best any one can tell you is, It'll happen when it happens. You say your voice is starting to crack so very shortly it will break and you will have a deeper voice. Not long to go now !
well every person has vocal string and as you grow older they enlarge or get longer. if you are taller you usually have a deeper voice than the others because your vocal string grow along with your body. and on the phone i wouldn't be able to tell you but unless you talked a lot during your conversation then your voice(vocal strings) would get tired.
Puberty starts before the menstruation does. When a girl get her period varies so I can not tell you when you will get yours but it is whenever during puberty.
Your question doesn't state how old you are, so it is hard to tell you if you are really going through puberty early. My guess is that if you are above 13 you aren't early in developing. Puberty starts at different ages for all people and everyone develops in stages so you are normal. Your voice will start to change as well. Relax you are OK .
your chest starts hurting a lot!! you get back pain, bloating. always tell an adult (someone you can trust) about going through puberty
of course it does, when your voice is breaking you will feel some pain. This just means that your voice is getting better or it has just started to break. No. You don't feel pain when your voice break. You will only hear the changes in your voice. If you experience pain, tell your parents so they can get you to a doctor for medical check.
Yes, about 13% of males experience stomach discomfort during puberty. There is some link between stomachaches and taller teen males as well.
You don't have to tell anyone. Everyone knows and assume you are going through puberty until you are almost 20yo. They will notice you getting taller, temper change, getting more female or male forms etc. It's not somehing you have to tell someone.
If you are in puberty, you should notice pubic hair growth start on the scrotum, and a deepening of the voice. The surest way is through ejaculation, which may occur via nocturnal emission or masturbation.