Ultrasonic measurements

ISVR Consulting are able to measure sound pressure levels at ultrasonic frequencies, i.e. frequencies above the normal audible range. Examples of projects have included

Measurement of the frequency responses of an ultrasonic transmitter and an ultrasonic receiver
Measurements of the output sound level, output frequencies and directionality of an ultrasonic deterrent designed to keep cats out of gardens
Measurements of the output levels of specialist distance measuring devices
Measurements of ultrasonic levels from laboratory equipment and comparison with health and safety guidelines for the operators
Measurements of ultrasound levels from large industrial processors designed to break rock and solids in water down into gravel and sand

Measurements can be made in our anechoic chamber under well-controlled conditions, or on-site if the source of the ultrasound is a large item of plant or part of a large installation.

In exposed individuals, ultrasound can cause unpleasant feelings, including temporary nausea, at levels below those dangerous to hearing. When ultrasonic equipment is used in the workplace we can assess the measured sound levels against guideline limits, to ensure the comfort and well being of those working nearby, as well as their safety.

We recently completed a literature review entitled "Damage to human hearing by airborne sound of very high frequency or ultrasonic frequency" for the Health & Safety Executive. This report HSE CCR 343/2001 is available in Acrobat (pdf) format on the HSE website.

For further information contact

ISVR Consulting,
University of Southampton,
Highfield,
Southampton,
SO17 1BJ,
United Kingdom

Telephone enquiries: 023 8059 2162 (+44 23 8059 2162 from outside the UK)
Fax: 023 8059 2728 (+44 23 8059 2728 from outside the UK)

Or E-mail: consultancy@isvr.co.uk