Complex sentence: Acousmatic compositions are sometimes presented to audiences in concert settings that are often indistinguishable from acoustic recitals, albeit without performers; the sound component being reproduced using tape, or computer, and then distributed over an array of speakers using a practice know as "diffusion".
Split into simpler sentences: Acousmatic compositions are sometimes presented to audiences in concert settings that are often indistinguishable from acoustic recitals, albeit without performers. 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".