an enclosed space for producing reverberation of a sound
Reverberation The first reverb effects created for recordings used a real physical space as a natural echo chamber. A loudspeaker would play the sound, and then a microphone would pick it up again, including the effects of reverb. Although this is still a common technique, it requires a dedicated soundproofed room, and varying the reverb time is difficult.
Parts of a theatre The house can refer to any area which is not considered playing space or backstage area. Outside the theatre itself this includes the lobby, coat check, ticketing counters, and restrooms. More specifically, the house refers to any area in the theatre where the audience is seated. This can also include aisles, the orchestra pit, control booth, balconies and boxes.