A device that receives, amplifies, and processes radio or audio signals for output. In audio contexts, often part of a hi-fi system.
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Receiver
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Record
An analog storage medium where music or other audio recordings are etched in the form of grooves on a flat disc, typically made of vinyl. During playback, a needle tracks the grooves, converting the mechanical movements into audio signals.
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RIAA curve
A standardized frequency response curve that enables precise adjustments for vinyl record recordings. During recording, a filter is applied to reduce low frequencies and boost high frequencies to compensate for the physical limitations of the vinyl format. During playback, the reverse curve is applied to restore the sound to its original form and achieve a linear, flat frequency response.
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RPM (Revolutions Per Minute)
The number of revolutions a turntable makes per minute. Common speeds are 33 1/3 RPM for LPs, 45 RPM for singles, and 78 RPM for shellac records.
