fix: useMultibandTrackVolume clipping

[thomasyuill-livekit]

Issue

Depending on the # of audio bands, there is a strange clipping (low-pass filter) effect on the visualizer

• Math.ceil-based chunking causes trailing bands to be zeroed out
• loPass/hiPass options are not using merged defaults

Screen.Recording.2026-01-13.at.6.22.06.PM.mov

Explaination

We initially fill an array of "bins" with zeros, then we process the frequency bands.

• Rounding up results in frequency range being processed too quickly, resulting in tailing bins not getting filled
• Rounding down results in bins getting filled faster, and tailing frequencies being clipped

Proportional filling tries to optimize for filling all the bins while processing all frequencies

Solution

• Use proportional distribution based chunking to avoid loosing tailing bands
• Use loPass/hiPass options from merged defaults

Screen.Recording.2026-01-13.at.9.00.57.PM.mov

Test plan

• run pnpm dev:storybook and reviewe the various visualizers
• switch state to speaking
• adjust the number of bands being rendered

Checklist

• Verify frequency bands are evenly distributed when changing bands count
• Confirm no trailing zeros appear in the returned array due to rounding
• Test with various bands values (5, 7, 10, 20, 50) to ensure consistent behavior

[changeset-bot]

🦋 Changeset detected

Latest commit: 686c2f6

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@livekit/components-react	Patch
@agents-ui	Patch
@livekit/component-example-next	Patch
@livekit/components-js-docs	Patch
@livekit/component-docs-storybook	Patch
@livekit/components-docs-gen	Patch

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[github-actions]

size-limit report 📦

Path	Size
LiveKitRoom only	6 KB (0%)
LiveKitRoom with VideoConference	32.46 KB (0%)
All exports	43.4 KB (+0.02% 🔺)