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Add binaural recording + tune spatial tracking

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binaural_recorder.py: Records left/right ear streams as stereo WAV
in rolling 5-minute segments. Training data for spatial audio models.
Enabled via BINAURAL_RECORD=1 env var.

spatial.py: Tune smoothing — alpha 0.3→0.4 (snappier response),
idle return speed 0.05→0.03 (gentler drift), timeout 2s→1.5s.

headmic.py: Wire binaural recorder into audio loop, add /recording
endpoint for stats, feed both ear streams (not just best beam).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Alex
2026-04-12 20:53:05 -05:00
parent afc8694c1a
commit 36aeb19280
3 changed files with 157 additions and 4 deletions
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spatial.py
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@@ -22,9 +22,9 @@ GAZE_Y_RANGE = 30 # max vertical deflection from center
GAZE_MAX_DISTANCE_MM = 3000 # beyond this, gaze is "far" (no convergence)
# Smoothing
SMOOTHING_ALPHA = 0.3 # exponential smoothing (0=sluggish, 1=instant)
IDLE_RETURN_SPEED = 0.05 # how fast gaze drifts to center when no VAD
IDLE_TIMEOUT_S = 2.0 # seconds of no VAD before drifting to center
SMOOTHING_ALPHA = 0.4 # exponential smoothing (0=sluggish, 1=instant) — slightly snappy
IDLE_RETURN_SPEED = 0.03 # how fast gaze drifts to center when no VAD — gentle drift
IDLE_TIMEOUT_S = 1.5 # seconds of no VAD before drifting to center
class SpatialTracker: