How Signals are Sampled: ADC

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Presentation transcript:

How Signals are Sampled: ADC Hardware Signal Flow Ch10: Sampling and Signal Processing

Ch10: Sampling and Signal Processing Mathematical Description of Sampling (Block Diagram & Equations) Ch10: Sampling and Signal Processing

Ch10: Sampling and Signal Processing Impulse Sampling Ch10: Sampling and Signal Processing

Requirements to retain information: Sample Rate Frequency Domain Example: x(t) = cos(2πft) Constant f and increasing Ts. Constant Ts and increasing f. Ch10: Sampling and Signal Processing

Requirements to retain information: Sample Rate Frequency Domain Example: x(t) = sinc(t/2)cos(2πft) Ch10: Sampling and Signal Processing

Requirements to retain information: Aliasing Frequency Domain Representation Ch10: Sampling and Signal Processing

Reconstructing a Sampled Signal: Interpolation Nearest Neighbor Ch10: Sampling and Signal Processing

Reconstructing a Sampled Signal: Interpolation Linear Ch10: Sampling and Signal Processing

Reconstructing a Sampled Signal: Interpolation Spline and Sinc Ch10: Sampling and Signal Processing

Ch10: Sampling and Signal Processing ADC to DAC Hardware Ch10: Sampling and Signal Processing