B.M. Nasir
Abstract
The author discusses multistage modulators, digital processing of pulse density modulation signals, algorithms, testing, modeling nonidealities and stability. Diagrams are given for: an N/sup th/ order sigma delta modulator, a multistage closed loop modulator, a first order digital sigma delta modulator, and a low pass digital comb filter.
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The author discusses multistage modulators, digital processing of pulse density modulation signals, algorithms, testing, modeling nonidealities and stability. Diagrams are given for: an N/sup th/ order sigma delta modulator, a multistage closed loop modulator, a first order digital sigma delta modulator, and a low pass digital comb filter.
Key concepts: Oversampling, Delta-sigma modulation, Delta modulation, Digital filter, Sigma, Modulation (music), Pulse-width modulation, Filter (signal processing)