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Lightning
Grade 5
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In 1877, Thomas Edison first sound. Today, when you speak into a(n) , the diaphragm vibrates. This produces a current of that is sent to an amplifier. The amplifier makes the current up to 50,000 times . During recording the electric current from the amplifier arranges magnetic on blank tapes into a pattern. This entire process reverses when you a recording. Instead of storing sound in patterns, compact translate the sound waves into a code. A combination of 1s and create this code.