Microphones!

What Is a microphone?
1. A microphone is a devise which generates electricity from sound waves
How do microphones work?
1. The microphone produces a small induced voltage in a coil of wire when sound waves hit a diaphra.m
  1. It is simelar to a loud speaker in reverse with a diaphram instead of a paper cone
    1. This type of microphone is called a moving coil mircophone
What happens?
1. the waves strike the diaphragm and move it backwards and forwards ate the same frequency as the sound
  1. The moving diaphragm moves the coil backward and forward
    1. this induces a changing current at the same frequency as the sound
      1. this changing current called a signal, can be used for recording tot the signal can be sent to a amplifier which makes the signal big enough to drive loudspeakers
        The loudspeaker converts the signal back into the original sound

Resource summary

	Created by Kate Baldwin over 10 years ago