A Visual Introduction to DSP for SDR
This is an animated slide deck providing a tour of digital signal processing topics relevant to implementation of software-defined radios, focusing on building visual/geometric intuition for signals.
- Complex (IQ) and analytic signals.
- Filtering (FIR and IIR).
- Frequency shifting.
- Sampling rates and the Nyquist limit.
- The discrete Fourier transform (DFT) and fast Fourier transform (FFT).
I originally wrote down the idea for this presentation as follows:
sdr tutorial idea:
starting from interactive slide deck w/ live spiral-graph display
transform it in multiple ways
a fft corresponds to successive amounts of untwist + sum (does it?)
Use the MathBox WebGL framework
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