BoxTech O2mea
Glossary of theatre, hall and acoustics terms
18 essential terms in Arabic and English.

Terms
| Term | English | Short definition |
|---|---|---|
| Auditorium | Auditorium | A large audience room designed for listening and viewing, used for lectures, conferences, concerts and ceremonies. |
| Theatre | Theatre | A building or room designed for live performance on a stage before an audience, with stage lighting, flying and wings. |
| Acoustic Treatment | Acoustic Treatment | Improving sound quality inside a room by controlling reverberation, echo and reflections with absorptive, diffusive and reflective materials. |
| Soundproofing | Soundproofing | Stopping sound travelling between rooms or between inside and outside through mass, decoupling and sealing. |
| RT60 | RT60 | The time sound in a room takes to decay by 60 dB after the source stops. |
| Reverberation | Reverberation | The persistence of sound in a room after the source stops, caused by many closely spaced reflections from surfaces. |
| Sightline | Sightline | The imaginary line from a viewer’s eye to a defined point on stage or screen, which must not be blocked by the head in front. |
| Riser | Riser | The raised step or platform on which a row of seats is fixed in a tiered hall. |
| Stage | Stage | The area where performers present the show, with its wings, flying, floor and related services. |
| Proscenium | Proscenium | The architectural frame separating stage from house, forming the “picture frame” through which the audience watches. |
| Auditorium Seating | Auditorium Seating | Fixed or flexible seats for auditoriums, lecture and conference halls, often with writing tablets and built for daily use. |
| Theatre Seating | Theatre Seating | Audience seats in theatres, designed for comfort over long performances, acoustic performance and safety. |
| Acoustic Panel | Acoustic Panel | A panel fixed to a wall or ceiling to absorb or diffuse sound, reducing reverberation and echo. |
| Acoustic Wall | Acoustic Wall | A wall designed for a specific acoustic role: treatment (absorbing, diffusing or reflecting) or isolation (stopping transfer). |
| Acoustic Ceiling | Acoustic Ceiling | A ceiling designed for an acoustic role: reflective to direct sound to the audience, absorptive to reduce reverberation, or isolating against noise from above. |
| AV (Audiovisual) | AV (Audiovisual) | The set of sound, image and control systems: loudspeakers, microphones, processors, displays, projectors, cameras and control. |
| Performing Arts Centre | Performing Arts Centre | A building housing several live-performance spaces such as a main theatre, studio and concert hall, with audience and artist services. |
| Conference Hall | Conference Hall | A hall designed for meetings, conferences and seminars, prioritising speech clarity, visuals, interaction and streaming. |