Complex sentence: In an acousmatic concert the sound component is generated using tape, or computer, and it is then distributed over an array of speakers using a practice know as "diffusion".
Split into simpler sentences: In an acousmatic concert the sound component is produced using pre-recorded media, or generated in real-time using a computer. The sound material will then be distributed spatially, via multiple loudspeakers, using a practice know as "diffusion".