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fix(denoise-tester): play models in both ears; match the call's DeepFilterNet strength #483

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jared merged 1 commits from fix/denoise-tester-audio into lotus 2026-10-30 19:30:49 -04:00
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Lotus CIandClaude Opus 5.5 2f5bcf2b91 fix(denoise-tester): play models in both ears; match the call's DeepFilterNet strength
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- Recorded clips often decode as stereo (Chrome Opus/WebM). The models
  only process channel 0, and the default channel mode ignores
  channelCount, so RNNoise/Speex played the cleaned audio in the LEFT EAR
  ONLY. Downmix to mono before the models (as Lotus Call does, #24) and
  pin the RNNoise/Speex/gate nodes to explicit mono. Verified in Chromium
  with a stereo speech clip through RNNoise: before L 16.1 / R 0.0, after
  L 16.0 / R 15.9.
- DeepFilterNet ran at attenuation limit 80 here vs 60 in calls; both
  muted the background outright, which sounds like the mic cutting out
  at word ends. Use 25, matching element-call#65.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5
 2026-10-30 18:53:17 -04:00