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Sounds of the rivers and valleys

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The groove in a record is created by a pin being vibrated by an audio signal while you rotate the record at a certain rate. Going the other way, when you place a pin in the groove, rotate the record at the same velocity as it was recorded, and amplify the signal coming from the pin, the resulting signal is the audio. The waveform of the audio is stored exactly as a physical reproduction of that waveform.

http://www.reddit.com/r/pics/comments/bbqt1/this_is_a_photo_of_a_single_groove_on_a_vinyl/c0lylvu

Filed under: Audio Phonograph Record Vinyl
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