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Digital-to-Analog Converter (DAC)

Digital-to-Analog Converter (DAC): These converters are found in any hardware that plays audio from a digital source, the most common being CD players. Since the data stored on the CD itself is digital and the sound that we hear from the speakers is analog, the DAC has to take the digital information provided from the digital source and convert it into an analog one. Theoretically the process can be completed without any degradation in audio quality from the digital source to the analog one, assuming that the appropriate amount of bandwidth is provided. However, actually achieving this lossless quality is practically impossible due to the quantization error, where the numerical values assigned to the data being transferred do not quite equal those present in the analog audio signal. [ Audio Glossary ]

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