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- Using%20Distributed%20Acoustic%20Sensing%20%28DAS%29%20data%2C%20it%20was%20possible%20to%20detect%2087%20out%20of%2088%20participating%20bands%20in%20the%20Norwegian%20National%20Day%20parade%20by%20their%20harmonic%20characteristics. obtainsSupportFrom s41598-025-97017-z assertion.
- High-order%20harmonics%20were%20recognized%20in%20the%20frequency%20response%20for%20the%20bands%20marching%20in%20step%20during%20the%20parade. obtainsSupportFrom s41598-025-97017-z assertion.
- The%20fundamental%20mode%20frequency%20of%20the%20bands%20fluctuated%20around%201.8%20Hz%2C%20with%20step%20lengths%20estimated%20between%200.44%20m%20and%200.62%20m. obtainsSupportFrom s41598-025-97017-z assertion.
- The%20walking%20speed%20of%20the%20parade%20was%20estimated%20at%200.99%20%C2%B1%200.06%20m%2Fs%20along%20Sector%202%20and%201.15%20%C2%B1%200.08%20m%2Fs%20along%20Sector%205%20using%20robust%20linear%20regression. obtainsSupportFrom s41598-025-97017-z assertion.
- One%20band%20was%20successfully%20tracked%20before%20the%20main%20parade%20over%20separate%20streets%2C%20demonstrating%20consistent%20tracking%20across%20two%20streets%20separated%20by%20~1.5%20km. obtainsSupportFrom s41598-025-97017-z assertion.
- Bands%20walking%20in%20step%20produced%20pronounced%20higher-order%20harmonics%2C%20while%20uncoordinated%20school%20classes%20showed%20weaker%20higher-order%20harmonics. obtainsSupportFrom s41598-025-97017-z assertion.
- Urban%20DAS%20data%20acquired%20during%20the%20parade%20showed%20reduced%20noise%20from%20vehicles%2C%20trams%2C%20and%20trains%20compared%20to%20daily%20background%20noise%2C%20highlighting%20crowd-generated%20signals. obtainsSupportFrom s41598-025-97017-z assertion.