fix(denoise): DeepFilterNet attenuation limit 60 → 25 dB (choppy word endings) #65

Merged

jared merged 1 commits from fix/dfn-strength-25 into lotus

2026-10-30 18:58:29 -04:00

Author	SHA1	Message	Date
Lotus CIandClaude Opus 5.5	f180f76196	fix(denoise): DeepFilterNet attenuation limit 60 -> 25 dB CI / Build embedded bundle (push) Skipped CI / Build embedded bundle (pull_request) Successful in 8m5s Details CI / Publish to Gitea npm registry (pull_request) Skipped Details At 60 dB the background is muted outright (measured -61 to -64 dB), so each word drops into dead silence and listeners hear the mic cutting out at word ends. On room-echo speech (RT60 ~0.4 s) with fan and keyboard noise at SNR 15 dB, 25 dB scored best: limit PESQ clean/fan/keyboard noise removed 60 3.35 / 2.33 / 2.04 ~62 dB 40 3.41 / 2.45 / 2.21 32-40 dB 25 3.59 / 2.72 / 2.38 25 dB 20 3.63 / 2.66 / 2.25 20 dB Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5	2026-10-30 18:50:06 -04:00

Author

SHA1

Message

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Lotus CIandClaude Opus 5.5

f180f76196

fix(denoise): DeepFilterNet attenuation limit 60 -> 25 dB

CI / Build embedded bundle (push) Skipped

CI / Build embedded bundle (pull_request) Successful in 8m5s

Details

CI / Publish to Gitea npm registry (pull_request) Skipped

Details

At 60 dB the background is muted outright (measured -61 to -64 dB), so
each word drops into dead silence and listeners hear the mic cutting out
at word ends. On room-echo speech (RT60 ~0.4 s) with fan and keyboard
noise at SNR 15 dB, 25 dB scored best:

  limit  PESQ clean/fan/keyboard   noise removed
  60     3.35 / 2.33 / 2.04        ~62 dB
  40     3.41 / 2.45 / 2.21        32-40 dB
  25     3.59 / 2.72 / 2.38        25 dB
  20     3.63 / 2.66 / 2.25        20 dB

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

2026-10-30 18:50:06 -04:00