Sound Particles Indie Perpetual LicenceSound Particles 2. 1 Indie uses the concept of computer graphics, but for audio: each particle represents a 3D sound source (instead of a 3D object) and a virtual microphone captures the virtual sound of the particles (instead of the virtual CGI camera). Imagine that you want to create the sound of a battlefield with Sound Particles. You could create 10. 000 particles (sound sources), spread them over a square mile, pick 50 war related sounds from