3 courses · 27 lessons
Bits & Surprise
Shannon’s big idea, hands-on: measure surprise, sculpt entropy, build a working compressor, shout through noise, then KL divergence, mutual information, and the cross-entropy loss that trains modern AI. Check-ins along the way, graded final quiz at the end.
Waves & Buckets
How sound becomes numbers and comes back alive: play with waves, hear aliasing fold past Nyquist, crush a melody to 3 bits, watch a DAC resurrect the signal, and tally the bitrate bill. Sound on; most demos are audible.
Sines & Spectra
Signal processing from first principles: signals add, harmonics build any waveform, correlation measures one frequency at a time, two templates defeat unknown phase, the DFT runs the measurement everywhere, filtering edits the result, and roots of unity collapse the cost into the FFT, demonstrated live.
Coming soon
More of the DSP-and-information stack is on the way.