Topic
Audio & Reactivity
How sound becomes motion — FFT, beats and response
6 posts in Audio & Reactivity
Audio & Reactivity9 min read
How Canvas Paints an Audio Visualizer
The other half of how audio visualizers work: requestAnimationFrame, reading AnalyserNode, and drawing bars, particles and tunnels on an HTML Canvas every frame.
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Audio & Reactivity9 min read
How FFT Turns Audio Into Visualizer Bands
What a Fast Fourier Transform actually measures in a song, how AnalyserNode bins become bass/mid/treble, and why those numbers drive every audio-reactive canvas.
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Audio & Reactivity9 min read
Every Audio Reactivity Control, Explained: Source, Dynamics, Attack and Beat Response
The Audio panel is a signal chain, not a pile of sliders. Here is what each control does, the order they apply in, and how to fix a visual that pulses instead of reacting.
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Audio & Reactivity7 min read
Free Preview Music, Copyright and Your Uploads: What Is Actually Safe
Where the free preview loops come from, what music is safe to publish in your own video, and what copyright actually means on YouTube and TikTok.
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Audio & Reactivity8 min read
Beat Sync Explained: Pulse, Hits and Shake
How Novus turns BPM into discrete visual hits, why silence stays still, and how to tune Beat Response, Pulse Intensity and Shake Amount for your genre.
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Audio & Reactivity8 min read
How Music Visualizers Work: FFT, Frequency Bands & Audio Reactivity
A plain-English look at what turns a song into moving visuals — the FFT, frequency bands, amplitude and beat detection that drive every audio-reactive scene.
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