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Analog: In the context of audio, “Analog” refers to the method of representing a sound as a continuous wave with voltage fluctuations that are “analogous” to the pressure fluctuations of the sound wave. Analog fluctuations are infinitely varying. Alternatively, digital audio captures a stream of fluctuations at discrete intervals and represents the sound using numbers that can be interpreted by software (sample time associated with Digital Recording). With regard to video, “analog” refers to video carried by a continuous signal.  For both audio and video, “analog” usually refers to a signal recorded to tape. [ Audio Glossary ] [ Video Glossary ]

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