Studying the dynamics of audio recordings at the Ticino River Park

We present the results of a measurement campaign conducted in spring 2021 in the Ticino River Park, located near the urban area of Milan in Lombardy, Italy. Three sites were examined using two SET audio recorders, positioned along a transect at varying distances from a high-intensity traffic noise source. Recordings followed a pattern of 1-minute acquisition periods alternating with 5-minute pauses. Based on these data, we analyzed the dynamics of peaks in the Leq1s time evolution for each recording at each site. By grouping the recordings into one-hour intervals, we characterized the distribution and temporal delay of occurrences over a 24-hour period. The results offer valuable insights into the dynamics of acoustic activity across a gradient of anthropogenic disturbance.