Our voice evacuation system experience gives you the confidence you need to meet the minimum requirements set out in BS 5839 and BS EN 60849. We work with sound system contractors and fire alarm contractors.

Compliance

The audibility and intelligibility requirements of a voice evacuation system can be stringent, so it’s critical that your voice evacuation system is designed and specified properly.

We examine your specification requirements closely including any for minimum sound pressure levels or post installation speech intelligibility testing (STI testing, RASTI testing).

In addition we undertake a detailed evaluation of the space in which the voice evacuation system will serve. This is often the determining factor in compliance with any performance specification and/or relevant standards.

Buildings still at design stage

We can carry out extensive acoustic room modelling using proprietary software packages to ensure that your voice evacuation system design will meet your specification requirements.

If your voice evacuation system cannot meet requirements because of architectural or acoustic constraints, we will provide you with scientific evidence.

Pre-installed systems

Our services include commissioning exercises to determine the electro-acoustic performance of your existing voice evacuation system. This usually entails speech intelligibility measurement and audibility testing.

Based in London we advise on UK and international projects.

Call us on +44 20 8859 0303

to discuss your requirements or for a no-obligation quote.

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Public address and voice alarm systems

Building acoustics

Planning and noise services