http://swo.jp/

The SINE WAVE ORCHESTRA is the project in which anyone can participate if he/she can produce a sine wave. The performance of this orchestra is carried out in a place with all the participants concurrently. Each participant produces only one sine wave.The sine waves, which are the simplest elements of sound, arise from each speaker and are interfered in the real space. Then, the sea of sine waves will appear.

Fuente: neural