Some models of Delta-Sigma ADC modulators in Python + Matplotlib
Implemented:
- 1st-Order
- 2nd-Order
- MASH-1-1
- MASH-2-1
Hitting the reset button will reload the modulators.py module,
so a small bit of live-coding can happen without having to kill and
reload the Matplotlib window.
FFTs are 2048 samples. The frequency slider is in cycles-per-FFT window. There's no window on the FFT, so try to select a prime number of cycles per window for the best-looking FFTs.
- Scale internal waveforms better
- Plot a zoom-in of the baseband
- Calculate the SNR over the baseband
- Allow to store a previous FFT, and plot with the latest for easy comparasons