Real-time lip sync component that performs client-side spectral analysis
on the agent's PCM audio stream (ElevenLabs doesn't provide viseme data).
Pipeline: 512-point FFT (16kHz) → 5 frequency bands → 15 OVR visemes
→ ARKit blendshapes (MetaHuman compatible) → auto-apply morph targets.
Currently uses SetMorphTarget() which may be overridden by MetaHuman's
Face AnimBP — face animation not yet working. Debug logs added to
diagnose: audio flow, spectrum energy, morph target name matching.
Next steps: verify debug output, fix MetaHuman morph target override
(likely needs AnimBP integration like Convai approach).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
j.foucher
224af6a27b