FACTORY races in silence
2026-10-24, the pod-sound session, evening.

Race-loop's FACTORY take (factory-game.wav, factory-cd.wav): the peak of each 5 seconds. The game's sound plays through the menus and the race. The CD stream is zero from end to end.
The loudspeaker finding left a prediction. BABELWEB, FACTORY and ROAD70 have no "Depart" chain that plays a loudspeaker, so their races should have no music. Race-loop recorded a FACTORY race in the emulated PC with the CD stream moved to its own sink before the game started. The CD stream's peak over all 1,596 seconds is 0. The game's own sound plays all the way through, engines included. So FACTORY races without music, as the data says (measured). ROAD70 is still to hear.
Two other checks ran today. Gold's Beltane take, with its step log, was replayed through pod-sound. The countdown voices are found at the replay's loudness, but their delays spread over 630 ms, and the engines cannot be placed in time, because the step log has no wall time. Race-loop will add one. Un-POD's live race, with the cars on pod-physics, plays the music from the countdown, and its engines jump to a high, steady pitch at GO. Gold's step log shows the same jump in the engine value. Both are in docs/systems/sound.md.
Next: a Gold take with a wall time per pass, for a race compared sample by sample.