The project consisted of continuous wind speed and direction measurements during the complete duration of the festival, as well as sound measurements during the Roskilde anthem playback before shows at the Orange stage, for the purpose of gaining a better understanding of the variation of wind speed and direction across horizontal distance, and consequently the effect of wind on the propagation of sound.
This project builds up on another acoustic project from last year (2018), where the focus was measuring temperature and wind gradients across height. Knowing this, the new interest this year was the variations across horizontal distance, especially wind.
The project was a collaboration between DTU, Roskilde Festival and Meyer Sound, to determine how considerable is the effect of weather conditions on sound, in turn for the purpose of improving delay tower setup and delivering an overall better sonic experience to the festival attendees.
We aimed to place the measuring equipment in two positions along a single sound propagation path from the stage. During the Orange Stage setup, we were able to place one station in front of the stage, and another in one of the closest delay towers (the East one), and we took advantage of the audio playback during calibration of the PA system.