Small browser tools for Digital Signal Processing. The maths behind them is tested against NumPy and SciPy. Nothing is uploaded: everything runs on your device.
Aliasing & Nyquist demoSee a tone, its samples and the alias they create.FFT visualizerMix tones, pick a window, read the spectrum in dB.dB & sampling calculatorsdB ↔ ratio, ADC bits → SNR, bin spacing, frame length.Interactive unit circlee^{jθ}, cos and sin, and radians per sample.FIR filter designerWindowed-sinc low/high/band-pass with response plot.