An elevated workspace for inspecting signals, spectra, and image structure across the time, frequency, and spatial domains.
This 3D scene combines a signal's time-domain waveform, frequency spectrum, and a linking surface in one view.
Time-Frequency View: places the waveform in front and the spectrum behind, with a surface that shows how they relate.
Waterfall View: shows how the spectrum changes over time, which is useful for dynamic signals.
3D Spectrum View: renders the spectrum as a 3D bar field, where bar height represents amplitude.
Phase View: visualizes amplitude and phase together using color.
A Fourier transform converts pixel data into the frequency domain, making structure easier to inspect. Low frequencies map to smooth regions, while high frequencies capture edges and detail. Adjust the sampling rate to see aliasing and reconstruction artifacts.
JPG and PNG supported
Any periodic function can be approximated by a sum of sine waves. Adjust the harmonic amplitudes and see what kinds of waveforms you can build.
Use your microphone to inspect audio frequency content in real time. Make sure microphone access is allowed.
Mask selected frequency bands, then reconstruct the image with an inverse Fourier transform.
Low Pass: keeps the low frequencies near the center, producing a softer image.
High Pass: keeps the outer frequencies, leaving edges and texture.