How language produced

The concept of voice onset time can be traced & studied  by "the relation that exists between two moments: the one when the consonant bursts when the air is released out of the mouth, or explosion, and the one when the larynx / some organ in the vocal tract starts vibrating". This is the important finding in treating Puberphonia.Alongwith the changes happening in the energy of intraoral sound in very important.This point is not available so far.The factors contributing to this energy is the key point in different languages/voice.