One could never stretch enough the importance of human voice in our society.    Since the beginning of humanity, human voice is considered the best form of communication.  It is the central most important aspect of human relationship.  Needless to say  we convey are  ideas , opinion , even our sense of humor through  our voice.

            So it's only natural that we are programmed to recognize voices even  before we are born. A baby within the uterus can react to some sounds as early as fourteen weeks on, and quickly becomes attuned to the mother's voice.  After birth, a baby reliably reacts more to the voice of the mother than to anyone else. It is a familiar phenomenon too that if one baby in a group starts crying, other babies will be likely to start to do so themselves, indicating that even infants have some programmed sympathy for the distress of others. It is fascinating, though, that a baby tends not to start crying if played a recording of its own cries, showing a knowledge at birth of the difference between me and not-me.

            In the sixties, the word "voiceprint" was coined, and it was considered that each individual voice might be visually represented with the fidelity of fingerprints. Forensic identification of speakers, however, has required subjective opinions of experts in ways that fingerprints do not, and often such evidence has yet to be declared admissible in state courts. Part of the problem is that age, mood, and situation change our voices in ways that vary voiceprints out of identifiability.

            Many studies have been conducted on  human voice,  such  findings  states that 7% of the information conveyed by a voice consists of words and their meaning, while the rest of the communication comes from vocal and facial expression.  Others, however, believes that the voice is more important than we have thought.  I firmly believes such study is true,  that we can make a more humane society if we could use the full potential of our voice.   So its not a surprise if  some large firms are promoting "e-mail free Friday", whereby for one day a week e-mail will be discarded, with the aim that employees will begin talking and listening to each other.