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feat(webui): audio level meter (Issue #234) #238

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sl-jetson merged 1 commits from sl-webui/issue-234-audio-meter into main 2026-03-02 12:15:32 -05:00
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sl-jetson commented 2026-03-02 12:15:21 -05:00
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VU bar with peak hold, speech activity indicator

VU bar with peak hold, speech activity indicator
sl-jetson added 1 commit 2026-03-02 12:15:22 -05:00 
Add real-time audio level visualization with VU-style meter:
- Responsive VU bar with color gradient (silent to clipping)
- Peak hold indicator with exponential decay
- Speech activity detection from /social/speech/is_speaking
- Color-coded audio levels with visual feedback
- Grid markers for level reference (25%, 50%, 75%)
- Comprehensive audio statistics (average, max, peak count)

Features:
- Dynamic color coding: Gray (silent) → Red (clipping)
- Level thresholds: Silent, Low, Moderate, Good, Loud, Clipping
- Peak hold with 1-second hold time + 5% decay per 50ms
- Speech activity indicator with pulsing animation
- 100-sample rolling average for statistics
- Real-time metric updates

Visual Elements:
- Main VU bar with smooth fill animation
- Separate peak hold display with glow effect
- Color reference legend (all 6 levels)
- Statistics panel (average, max, peak holds)
- Grid-based scale (0-100%)
- Speech status badge (SPEAKING/SILENT)

Integration:
- Added to SOCIAL tab as new "Audio" tab
- Subscribes to /saltybot/audio_level and /social/speech/is_speaking
- Properly formatted topic info footer
- Responsive design matching dashboard theme

Build: ✓ Passing (113 modules, 202.67 KB main bundle)

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
sl-jetson merged commit 3901e27683 into main 2026-03-02 12:15:32 -05:00
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Reference: seb/saltylab-firmware#238
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