sigma-delta converter(redirected from Delta-sigma modulation)
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sigma-delta converter[‚sig·mə ‚del·tə kən′vərd·ər]
A class of electronic systems containing both analog and digital subsystems whose most common application is the conversion of analog signals to digital form, and vice versa, using pulse density modulation to create a high-rate stream of single-amplitude pulses in either case. Also known as delta-sigma converter.