Example of acoustic data processing from the 2024 demonstration conducted as part of the Autonomous, Directional Acoustic Profiling Float for Soundscape Characterization project. Panel shows helicopter sounds at 9:58 a.m. PT (on July 27, 2024). The upper panel is a spectrogram (i.e., time-frequency representation of data), the lower panel shows horizontal bearing angles to sources of sound. The azimuth angle representation of data can only be obtained using directional acoustic sensors. Audio clips were truncated to cut out ambient noise.


Download audio file (mp3, 461 KB).