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Live Spectrogram Strip
A speech spectrogram writes itself in at a glowing now line and scrolls left in heat ramp cells, formants as warm streaks. Each recognized word captions above its own columns as it passes.
Also known as: spectrogram animation css, speech recognition visualizer, audio analysis animation, live captions spectrogram.
Live spectrogram
16 kHz
en-US
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Unlock the HTML and CSS
Everything you see above is live. Basic and Pro include every premium piece, with the HTML and CSS ready to copy, plus the Tailwind version where there is one and Motions in Claude Code on Pro.
Customizing this snippet
- Color: set
--aia-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--aia-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.