Transcription of Analog Digital - UMIACS
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Analog Digital - UMIACS
Slides adapted from ME Angoletta, time, tk [ms] Voltage [V] time, tk [ms] Voltage [V]tsAnalog & Digital signalsAnalog & Digital signalsContinuous functionContinuous functionV of continuouscontinuousvariable t (time, space etc) : V(t).AnalogDiscrete functionDiscrete functionVkof discretediscretesampling variable tk, with k = integer: Vk= V(tk). [ms]Voltage [V]Uniform (periodic) sampling. Sampling frequency fS= 1/ tSSlides adapted from ME Angoletta, CERND igital vsanalog proc ingDigital vsanalog proc ingDigital signal processing (DSPing) More flexible. Often easier system upgrade. Data easily stored. Better control over accuracy requirements. A/D & signal processors speed: wide-band signals still difficult to treat (real-time systems). Finite word-length effect. Obsolescence ( Analog electronics has it, too!)
Analog & digital signals ... Digital Signal Processing (DSPing) • More flexible. ... Digital Processing A/D Antialiasing Filter ANALOG INPUT
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