Diffusing surfaces serve performance spaces, not home reproduction rooms.

Evidence

Sound-scattering, diffusing surfaces are necessary in performance spaces where there is a fixed amount of sound energy from voices and musical instruments and it is necessary to deliver that sound to all parts of the auditorium or to microphones in a recording studio. Sound reproduction is a very different process. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1028

Categorization

• XREF: Distinguishes the acoustics of live performance venues from the physics of sound reproduction — a core boundary the reader’s larger project on rooms and loudspeakers depends on.