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Fourier Lab

Build a wave from rotating frequencies, one harmonic at a time.

WAVE MOTION
SlowFast

Each harmonic multiplies the signal samples by sine and cosine waves. Their average products tell us how much of each frequency is present.

Signal and reconstruction

Original Reconstruction

Frequency spectrum

Included Not yet added
What you’re seeing: The green curve is the input signal. The gold curve adds the selected frequency components to approximate it. Each bar shows a harmonic’s strength; brighter bars are included in the reconstruction.

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