For the first time, narrowband spectral immission directivity (SID) has been tested outside the lab and in real-world conditions. Over the course of three separate 24-hour measurement campaigns at different locations, we captured and analyzed environmental noise using this new approach.
The results (see figures below) show spectra for specific directions, calculated directly from the recorded data. What makes this exciting is how SID combines time, frequency, and direction into a single picture of the sound environment.



The results will be presented at the 11th Congress of the Alps Adria Acoustics Association.



