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These early converters were limited either by the converter technology at the time or by the amount of data that associated system could handle to much lower resolution than typically used to encode audio. Prior to the development of practical digital audio recording systems AD converters were used in applications such as medical testing and monitoring equipment, and instrumentation (industrial measurement and monitoring). The term can be used to describe the actual analog to digital converter IC or circuit, or an entire unit that incorporates all of the necessary support circuitry to accept line level analog input signals and output the encoded digital audio signal in one or more formats.įor brevity, the term " AD converter" or " ADC" will be used interchangeably with "analog to digital converter" in the following discussion. Analog to digital converters can also be used for non-audio applications but that is beyond the scope of this discussion. In most instances further processing is used to generate other formats that employ data compression of both the lossless and lossy variety. Once encoded, the information can be stored, transmitted, or copied in a lossless manner. This code is typically linear PCM format but may also be other formats such as DSD or I2S (typically used internally in analog to digital converter units). The term "analog to digital converter" is used to describe a device that accepts analog audio inputs and outputs a digital code that represents the original analog input.
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