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How Signals are Sampled: ADC

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Presentation on theme: "How Signals are Sampled: ADC"— Presentation transcript:

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

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

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

4 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

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

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

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

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

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

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

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