Oversampling and digital filtering eases the requirements on the antialiasing filter which precedes an ADC. The concept of oversampling and interpolation can be used in a similar manner with a reconstruction DAC. For instance, oversampling is common in digital audio CD players, where the basic update rate of the data from the CD is 44.1 kSPS. Early CD players used traditional binary DACs and inserted "zeros" into the parallel data, thereby increasing the effective update rate to 4-times, 8-times, or 16-times the fundamental throughput rate.
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Editorial
Upcoming Events
DAC 2012 at San Francisco CA - Jun 3 - 7, 2012
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