Newham Borough, located just five miles east of the City of London, has experienced huge amounts of regeneration and redevelopment over the last twenty years through government investment schemes for Newham and the surrounding boroughs. Muhammad Islam, Senior Environmental Health Officer at Newham Councilâs Noise and Nuisance team, explains: “The diversity within Newham Borough makes it a vibrant and exciting Read More…
Archive | Environmental Noise
AuditStore – Data verification on the optimus sound level meters
What is AuditStore? AuditStore is a new technology that helps you to ensure that your noise measurement data is valid and trustworthy. AuditStore allows the user to verify measurements that have been downloaded to the NoiseTools software against a secure data store within the instrument. This allows the user to present data with confidence and to have Read More…
Tonal Noise Analysis with Optimus Green Sound Level Meters
Often the sound energy from a noise source will be spread over a wide band of frequencies. Sometimes a noise source will emit noise that is concentrated in a narrow part of the spectrum or contains a high proportion of energy at a single frequency (a âpure toneâ). This is referred to as tonal noise.
New noise measurement case studies
We’ve added some new case studies to our website. These cover the use of some of our most popular products including the optimus red, optimus green and the dosebadge noise dosimeter. You can view these at www.cirrusresearch.co.uk/library/case-studies/ Why not stay up to date with what’s new from Cirrus? Just sign up for our newsletter or subscribe to our blog and Read More…
Planning to perfection!
Cirrus Research helps The Banks Group to keep at the forefront of noise measurement With the experience of over 35 years in land development, The Banks Group continues to develop land throughout England and Scotland for a variety of uses including surface coal mines, onshore wind farms, commercial and residential property schemes and sustainable waste management facilities. With the aim Read More…
Video – Find out how simple to use the Trojan Noise Recorder is.
We’ve uploaded a new video that shows how simple our Trojan Noise Nuisance Recorder is to use. You can find this video on YouTube: [youtube]http://www.youtube.com/watch?v=7Ux_a1njMx8[/youtube] or you can view it on our new video website at www.cirrusresearch.tv. Happy viewing! Here is the text transcription for our video Trojan Noise Nuisance Recorder Transcription This is the cirrus Trojan the most Read More…
Influences of weather, damage and ageing on the performance of outdoor microphone windshields
Windshields fitted to outdoor measuring microphones serve a dual purpose – to reduce wind-generated noise, and to protect the delicate microphone from damage by environmental factors such as rain, ice and dust. However, the presence of a windshield inevitably affects the directional and frequency responses of the measuring system. This paper presents results of measurements on the directional and frequency Read More…
Motorbike exhaust sound levels for track and race days – An overview from a rider
As a motorbike track day enthusiast and rider myself, I have friends regularly asking me for advice when it comes to what is the maximum sound level their bike exhaust noise level can be. When I reply with the question, “what circuit are you racing at?” they seem surprised that this is relevant and that I was unable to provide Read More…
Noise levels from fireworks – a very unscientific measurement!
This year, Bonfire Night (5th November for anyone who doesn’t know) fell on a Saturday this year and despite the forecast of rain, myself and my colleagues Gill Cussons, Justin Barker and Nigel Palmer braved the weather with the aim of measuring the noise levels at our local fireworks displays. We didn’t set out any rules as to where these Read More…
What is a Class 1 Sound Level Meter?
A Class 1 Sound Level Meter is a noise measurement instrument that meets the requirements of IEC 61672-1:2002 (or an equivalent such as BS EN 61672-1:2003) to Class 1 performance. Tolerances & Accuracy This standard specifies two levels of performance, Class 1 and Class 2, with Class 1 being effectively more accurate. Within the standard are a set of performance criteria Read More…
