A drum screen, sometimes referred to as a drum shield or acoustic shield, is a tool used by audio engineers to avoid the sound control problems caused when louder instruments overwhelm quieter instruments and vocals on stage.
Drum screens are usually made out of a 0.22-inch (5.6mm) thick clear acrylic sheet material.
[citation needed] In some applications where the performance area has high ceilings that reflect a large percentage of the sound, acrylic sheet is sometimes used to almost completely surround the loud instrument on all sides and above to create what is commonly known as an isolation booth.
While this technique will aid in isolating the loud sound source, the interior acoustics of any booth with such a large percentage of highly reflective surfaces will be difficult or impossible to control.
It is therefore recommended that at least 60% or more of the reflective surfaces inside this type of isolation booth be treated with acoustic absorption products.