Modern theatres, event and concert halls are not only sharing the same space but also adopting cutting edge technology to provide their audiences with the best possible acoustic experience. “The Factory” project in Manchester is a prime example of the challenging scenarios faced by architects, acoustician’s and structural engineers where managing both internal and external noise and vibration is critical to success.

Important acoustic isolation considerations for the construction
of theatre, event and concert halls:
Sound transmission class (STC): The walls, ceilings, and floors of the hall should have a high STC rating, which measures the ability of the building’s envelope to reduce sound transmission. A higher STC rating means less sound transmission and better acoustic isolation.
Airborne sound: The hall’s construction should include measures to minimise the transfer of airborne sound, such as installing sound-absorbing materials, sealing all openings, and using double or triple glazing windows.
Impact sound: Impact sound can be a significant problem in multi-level halls. Measures to reduce impact sound include using a floating floor system, installing an acoustic underlayment or carpet, and isolating the walls with resilient channels.
HVAC noise: The hall’s air conditioning and ventilation systems can generate noise that can affect the sound quality. Careful attention should be paid to the HVAC system design and installation to minimise noise levels.
Room acoustics: The interior design of the hall, including its shape, materials, and layout, should be carefully considered to optimise the room acoustics for the sound system and the type of events that will be held in the hall.
Soundproofing doors: Doors are often overlooked as a significant source of sound transmission. Soundproofing doors should be installed with airtight seals and sound-dampening materials.
Internal acoustics: The internal acoustics of the hall, including the position of the speakers, microphones, and the sound-absorbing materials, should be optimised to reduce unwanted echoes and reflections.