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Spectrogram Waterfall
A radio waterfall scrolls down while signals appear, drift, chirp and vanish over a noise floor. A spectrum trace above peaks with each one, and a tuning marker glides over to lock on.
Also known as: spectrogram background css, radio waterfall display, sdr waterfall animation, frequency spectrum background.
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Customizing this snippet
- Color: set
--bgx-coloron the element or a parent. Currently previewing#3b82f6. - Pattern scale: set
--bgx-size. Every other dimension is inem, so the whole thing scales together. Currently previewing16px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.