My Emacs configuration https://git.cjennings.net/dotemacs/atom?h=load-graph-classify-start 2025-11-15T00:34:39+00:00 2025-11-15T00:34:39+00:00 Craig Jennings c@cjennings.net 2025-11-15T00:34:39+00:00 urn:sha1:0567b466488cd68fd043fd5f01918a5d728ddbb8 Phone calls were not capturing the remote person's voice due to severe volume loss (44 dB) when using the amerge+pan FFmpeg filter combination. Changes: - Replace amerge+pan with amix filter (provides 44 dB volume improvement) - Increase default system volume from 0.5 to 2.0 for better capture levels - Add diagnostic tool to show active audio playback (C-; r w) - Add integration test with real voice recording - Fix batch mode compatibility for test execution The amix filter properly mixes microphone and system monitor inputs without the massive volume loss that amerge+pan caused. Verified with automated integration test showing perfect transcription of test audio.