feat: audio pipeline noise gate for VCS pre-processing#6
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cloudygetty-ai wants to merge 2 commits into
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feat: audio pipeline noise gate for VCS pre-processing#6cloudygetty-ai wants to merge 2 commits into
cloudygetty-ai wants to merge 2 commits into
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- src/services/audio/AudioPipelineService.ts: singleton class — mic → 80 Hz HP filter → hard-knee compressor gate → output. Exposes engage(), calibrate(), stop(), and a subscribe() observer pattern. - src/stores/audioPipelineStore.ts: Zustand store mirroring pipeline state (status, gateOpen, gateThresholdDb, isCalibrated, errorMessage) - src/hooks/useAudioPipeline.ts: React hook for components — returns state + action callbacks, auto-stops on unmount
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Resolves pre-existing TypeScript errors in useVideoCall.ts: - useSocket.ts was imported but never existed - services/api.ts was imported but api lives in lib/api.ts
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Summary
Adds a Web Audio noise gate pipeline as a pre-processing layer before VCS voice sample capture.
src/services/audio/AudioPipelineService.ts— singleton class. Signal chain: mic → 80 Hz high-pass filter (removes sub-bass rumble that skews pitch analysis) → hard-knee dynamics compressor acting as a noise gate (20:1 ratio, knee 0) → output gain. Auto-calibrates threshold against the ambient noise floor on first engage. Exposesengage(),calibrate(),stop(),subscribe(), andgetOutputNode()(for piping the gated stream into MediaRecorder or the VCS capture chain).src/stores/audioPipelineStore.ts— Zustand store that mirrors all pipeline state (status, gateOpen, gateThresholdDb, isCalibrated, errorMessage) for reactive UI binding.src/hooks/useAudioPipeline.ts— thin React hook; returns store state + actions, stops the pipeline on component unmount.Test plan
engage()triggers mic permission prompt; status transitions OFFLINE → CONNECTING → CALIBRATING → ACTIVEgateOpenisfalsein ambient silence,truewhen speaking above the calibrated thresholdcalibrate()can be re-triggered while active; threshold updates in the compressor nodestop()halts all mic tracks and resets state to OFFLINEerrorwith messagegetOutputNode()returns the gain node; piping it into a MediaRecorder captures the gated audioGenerated by Claude Code