Signal Processing Lab – FFT, Filters & Waveforms

Signal Type

Parameters

Freq (Hz)

Amplitude

Phase (°)

Duration (s)

Actions

Square Wave Tools

Duty Cycle ? 50 %

Harmonics ? 1 Show individual harmonics

Audio

Fourier approx only Unchecked: plays a mathematically perfect pulse wave (infinite harmonics) — the harmonics slider does not affect the sound. Checked: plays only the first N harmonics you selected, so the audio tracks exactly what is plotted — drag the slider and hear the approximation change.

📊 Signal Properties