Audiometric test booths

An audiometric booth is a small acoustic room whose job is to hold the background noise inside it low enough that a hearing test can be believed. It is specified for occupational health services, hospitals, clinics and factory hearing conservation programmes, and the specification comes from the site rather than from a catalogue.

The governing criterion is the maximum permissible background noise level inside the test room, which is defined in international standards including ISO 8253 and ANSI/ASA S3.1.
The required figure is not the same on every job. It depends on the frequency range tested and on whether supra-aural, insert or free-field presentation is used, so this has to be settled before anything is designed.
What drives the specification is the noise level in the space the booth will occupy, not the booth itself. We therefore ask for site information or a noise measurement before proposing anything.
Ventilation, lighting, the observation window and the cable entry for the audiometer all have to be designed together, because every opening is a short circuit for sound.
Ventilation has to be silenced so it can run during testing. A booth that has to have its fan switched off before each measurement will not be used as intended.
Booths are built from modular panel systems, so they can be dismantled and relocated when a floor plan changes. That is a real advantage over building a permanent room.
Where the ambient level is high, the answer is a double-wall construction with a structurally isolated inner room, which costs more space and more money. That decision should follow a measurement rather than a guess.
Employers whose staff are exposed at or above the levels set by occupational safety law must run a hearing conservation programme that includes audiometric testing. The thresholds and testing intervals follow the legislation in force.
Made to order against a project specification. No stock items and no price on the website.

What we supply

The requirement for a booth is set by the conditions it goes into, not by a model number. What has to be achieved is a background noise level inside the booth, and that depends on the noise in the room where it will stand, the frequency range being tested and the type of earphone in use. That is why we do not quote a model, a size or a performance figure before we know the site. Send us how the booth will be used and what the space is like, we agree together which criterion applies, and then we propose an approach and a price for the project. If you are still at the planning or budgeting stage, get in touch anyway — we would rather help you scope it properly than sell you the wrong cabin.

Where this is specified

Factory and workplace hearing conservation programmes
Occupational health services and health screening providers
Hospital ENT and audiology departments
Hearing aid retailers and fitting centres
Mobile health screening units and medical vehicles
University and institutional hearing research laboratories

Standards that define the requirement

ISO 8253 is the series covering audiometric test methods, and it is what determines how low the background noise in the test room has to be for the result to stand up.
ANSI/ASA S3.1 specifies maximum permissible ambient noise levels for audiometric test rooms, broken down by frequency range and by earphone type.
Naming these standards states where the requirement comes from. It is not a claim that a delivered booth is certified to them — the achieved figure has to be verified by measurement in the installed position.

These are the documents that set the requirement. Naming one is not a claim that a particular supplied item is certified to it; test evidence is issued per project.

Product lines in this family

Single-occupancy audiometric booths
Multi-seat booths for high-volume screening
Single-wall and double-wall booth constructions
Audiometric suites with an acoustically isolated control room
Audiology rooms built into an existing building
Relocatable booths and booths for mobile health screening vehicles
Bespoke audiology rooms designed to a project brief
Refurbishment of existing test rooms to bring background noise within criterion
Acoustic doors, observation windows and silenced ventilation for test rooms
Audiometer jack panels, internal lighting and power

Request a project quotation

Everything in this family is made to a project specification. Send the details and we will assess it. Goods are supplied to the project for your contractor to fit.