Environment Agencies, environmental health organisations, consultants and companies across the world routinely use our free smartphone service to save time and resources to get definitive problem diagnoses plus costed evaluations of mitigation best practice. Our expertise and unique technology cut typical noise complaint investigation/resolution time from months (or years) to a few days or weeks, dramatically reducing resource spend (time, legal fees, bureaucracy etc) and providing complainants with a rapid resolution.
We will define best practicable means (BPM) for the courts.
There are 2 parts to this painless and cost-free process:-
We can also arrange "telepresence" via Whatsapp to provide live feedback and instant analysis. Take a virtual noise expert with you to site anywhere on the planet...
The time and resource savings associated with this approach are illustrated by the following past projects and by the case studies below. It also provides reassurance as to what constitutes best practice. Why not try it on the next project?
Many regulators and consultants email us smartphone data from preliminary site visits (noise complaints or planning issues) for a rapid expert opinion. In most cases, we can provide detailed source identification and costed control options within a day or two.
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So there is an environmental noise problem. There are 3 potential features associated with any such problem that must be evaluated:-
The overall dB(A) level is the simplest parameter to evaluate and is by far the most common measurement. Despite the fact that tonal noise is a very common cause of complaints, objective identification using narrow-band frequency analysis is rare. We use sophisticated analysis and noise signature fingerprinting - from a couple of 20-second smartphone recordings we can usually identify not only the culprit plant but also the precise cause e.g. out-of-balance, fan blade pass, gearbox gear mesh, worn bearing, blower or pump harmonic, acoustic or structural resonance, burner or combustion noise etc.
Simply email us the following information for the diagnosis and control options.
This figure is a typical analysis example. Noise reports commissioned to address tonal noise nuisance complaints had not only wrongly ascribed the problem to one particular site, but had also failed to identify the source(s). We used smartphone recordings from site emailed by the Environment Agency to identify that the problem was caused by a pair of tones. One from a CHP engine at the classic 75Hz (50Hz mains frequency generator) on one site, but the other was at 71Hz from a chiller installation on a completely different site. Our recommendation (tuned silencer) eliminated the CHP tone. The chiller tone can be cut using low-cost aerodynamic technology.
See the case studies below for more details. We can also provide noise workshops in these techniques.