what is microphone?explain.

what is microphone?explain.

                                THE MICROPHONE   it is quite easy to convert the spoken word to a digital signal  for computer input.the mic... 05:10

                                THE MICROPHONE
 

it is quite easy to convert the spoken word to a digital signal  for computer input.the microphone converts audio signals to electrical waves and these can be converted by electronic circuitry in the computer to digital from.what is difficult is the recognition by the computer, of the signal, so that it can handle it in the same way as if it had been typed.highly sophisticated speech-recognition software is required to be able to match the sound uttered by the user with a vocabulary of sound signals stored in the computer and a display the words on the screen as thought they had been entered at the keyboard.

the development of workable speech-recognition systems for the English language has been major goal of many researchers for the number of years. recently, commercial system have started to emerge. one major problem is the many inconsistencies between the written and spoken words in English. Japanese, in contrast, is phonetically very precise and so speech-recognition system for those languages were relatively easy to develop and have been used for some time.
a second problem is the fact that there can be wide variations between the speech patterns of one individual and another. to cope with this, the system has to be 'trained' to recognize the user's particular speech. most systems require him or her to read a passage containing all the words stored in the computer's vocabulary on disk, so that it is able to match what is spoken with what is stored. in this way it constructs speech 'templates'for the user, which is stored for use in all subsequent dictation sessions.
schuss-recognition system in the past have suffered from either having too limited a vocabulary to be a much what was spoken with that was stored in the computer. recent increases in computer power have greatly seeded things up and voice system on personal computers have now appeared.