Audible EcoSystemics n. 3a (Background Noise Study) (2003) by Agostina Di Scipio:
Kirsten Reese has made a documentation of Der tönende See, which allow you to hear the sound of several bowls by moving your computer mouse on them.
A documentation on Eliane Radigue. She mentions how she places loudspeakers in the concert hall at 9’55”:
Berliner Lautsprecher Orchester (since 2013) developed by Wolfgang Heiniger. This orchestra has not a symmetrical set-up, in contrary to the Acousmonium.