I just want
share how actually microphone pick sounds. A microphones converts sound into a
small electrical current. Then, sound waves hit a diaphragm that vibrates,
moving a magnet near a coil. In some designs, the coil moves within a magnet.
Other microphones, such as condenser microphones, work on the principle of
capacitance. Capacitors consists of parallel conducting plates that are store
charge and are used to smooth out signals like voltage variations in a power
supply. In condenser microphones, the incoming sound vibrates one plate of
capacitor. The varying capacitance is converted into a corresponding electrical
signal.
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