Noise Monitoring Articles

  • Ready for the future with CNOSSOS-EU!

    The Environmental Noise Directive 2002/49/EC which appeared in 2002 raised the question among those who are “experts in noise” how noise mapping and noise action planning should be implemented throughout Europe. They all agreed that, in view of the completely different calculation methods in the European countries, the calculation results reached and exposure figures collected would ...


    By Wölfel Group

  • Verification of CFD tool for simulation of cavitating flows in hydraulic systems

    Cavitation is an undesirable phenomenon in hydraulic systems, as it causes erosion and noise. The main difficulty in cavitation prediction when using Fluent software is lack of an openly accessible tool for implementation of a freely chosen homogeneous cavitation model. In this paper the main challenge is to make such a tool, user defined function (UDF). The second challenge is to use a ...


    By IWA Publishing

  • Optimus® Fired Up for Rocket Noise Testing Project - Case Study

    Airborne Engineering Limited (AEL) specialises in measurement, testing and research; particularly of advanced rocket propulsion systems. One of AEL’s principle services is carrying out static tests of rocket engines for other aerospace companies. AEL is based at Westcott Venture Park, formerly the Rocket Propulsion Establishment, and operates two test bunkers, purpose built in 1949 for ...


    By Cirrus Research plc

  • Seeking Clarity in Noise

    Environmental noise regulation can be frustrating. The noise limits, applicable measurement metrics, assessment methods and level of enforcement vary a lot by region and jurisdiction and rarely do they all align. Historically, noise emitters and sensitive receivers could afford to use distance to separate themselves. Consequently, environmental noise laws were first developed in regions with high ...


    By Innova Global Limited.

  • London Hotspots for Noise Nuisance Complaints [Infographic]

    As we continues our quest to build up a noise nuisance map of the UK, we recently turned our attention to our fair Capital, London. With 33 boroughs in Greater London, it was always going to be something of a time-consuming task to get the noise complaints data via Freedom of Information (FOI) requests. However, we were pleasantly surprised by the London Local Authorities efficiencies. The vast ...


    By Cirrus Research plc

  • Traffic Noise Mapping in Chile

    Against this backdrop of economic change, a two-year study got underway across three Chilean cities led by the Univ. Austral. and was supported by the Chilean Ministry of the Environment. Academically titled: “Development and analysis of noise maps of three urban agglomerations using modeling software”, the study concentrated on the Chilean cities of Coquimbo – La ...


    By Cirrus Research plc

  • NoiseTools for Noise Nuisance Users

    At Cirrus, we’ve always looking for ways to enhance our products to better help our customers meet their noise measurement needs. The NoiseTools software that you are using with your Cirrus Noise Nuisance equipment is always being updated and enhanced with new functions and features all the time. At regular intervals, we will release a new version which contains these updates so to make ...


    By Cirrus Research plc

  • Designing that unique Ferrari sound using NVH Simulation

    Our NVH simulation technology enabled Ferrari to perform virtual evaluations of alternative design decisions in an interactive, free-driving scenario. Ferraris are distinguished by a unique sound that is as carefully tuned as a piece of music. Creating this characteristic sound authentically and yet keeping it within legal limits requires careful component design and selection. Our NVH ...

  • Array gain and reduction of self-noise

    Abstract—Because an array is composed of many sensors, each making an independent measurement of the wavefield, intelligent combination of the sensor signals should lead to an overall increase in the signal-to-noise ratio. What we are trying to achieve is enhancing the signal with an array beyond what is possible with a single sensor. The array gain measures an array’s signal-to-noise ...


    By Norsonic AS

  • Cloud computing for noise monitoring

    ABSTRACT Cloud computing is the use of computing resources that are delivered as a service over the Internet. This means that software, hardware and network resources are centrally managed. The ubiquitous availability of high-capacity networks and reduced cost of both client and server hardware have led to a tremendous growth in cloud computing. The concept gives a huge benefit for ...


    By Norsonic AS

  • The Noise Doctor’s Review of 2016

    2016 is rapidly coming to a close and 2017 is almost upon us. New Year is always a time for reflection. With this in mind, I reviewed all the NoiseNews updates from 2016 and can now reveal the top 10 blogs that aim to educate, inform and entertain. Are you sitting comfortably? Then let us begin. Top 10 Blogs of 2016 10. The Big Bang Theory: What You Really ...


    By Cirrus Research plc

  • HAV mis-measurement – to no standards whatsoever…

    Misunderstanding Hand Arm Vibration monitoring marketing material can put hands and safety policies at risk. Caveat emptor. We are regularly asked about new vibration measurement technology, particularly re the latest hand-held, glove or wrist mounted transducers that are presented as the latest assessment improvements. Whilst they may be useful tools, unfortunately some claims have been ...

  • On the right track

    High-speed train manufacturer, CAF, rely on world-class beamforming technology to reduce the noise generated by their trains – helping to make high-speed trains a more viable option for travellers and operators alike. Because of its relatively low levels of CO2 emissions, train travel is considered one of the ...

  • First short-term noise monitoring system for airports launched

    Airport Noise Monitoring On Demand increases flexibility for investigation, compliance or planned changes Brüel & Kjær today announced the release of Airport Noise Monitoring On Demand, a system that enables airports to temporarily - and cost-effectively - increase noise monitoring when needs arise. This system helps airports measure ...

  • Is a background noise survey worth doing? - Case Study

    As a plant owner or designer you will logically try to keep construction costs down wherever possible. So noise control features can easily be sidelined as an “optional extra” to be added later if the need arises. You might also be confident a new industrial plant will comply with all regulations on completion, but that doesn’t mean a future neighbour won’t complain about ...


    By Innova Global Limited.

  • What answers has the Government found to the environmental hurdles facing a third runway?

    With the Government now having officially announced its support for a new runway at Heathrow, despite having slashed the Airports Commission’s claim of a £147 billion benefit to the UK by almost 60% (referring instead ...


    By A.E.F. S.r.l.

  • Safeguarding neighbours from construction noise

    The project to modernise Twickenham railway station would affect residential properties standing only a few feet away from the station. Over the past few years, regular improvement works on the tracks have caused disturbance to residents, who already live with high background noise, and the area has a history of frequent noise complaints.  The authority wanted to make sure that ...

  • Utilising the Strengths of Different Sound Sensor Networks in Smart City Noise Management

    City noise management involves a variety of disciplines such as planning, mapping, action plans, policing, complaint management, abatement and public awareness. With the wide availability of mobile broadband internet access coupled with low cost noise sensors, many authorities and researchers are eager to use sound sensor networks for these tasks. A sensor network can be defined as a group of ...

  • Workplace Monitoring: Who, What, When, Why, How?

    In my previous articles in this series for SHP readers, I have focussed on the need for current attitudes to general health and safety processes to change and emphasised the importance of regular monitoring. The best way to combat those ‘hidden killers’ and protect our workforces is to increase awareness of the benefits of regular monitoring and detection.  Employees then need to ...


    By Casella

  • North West Hotspots for Noise Nuisance Complaints [Infographic]

    Cirrus Research has been involved in an interesting project that looks at noise nuisance across the North West. Some of you might remember that we did a similar exercise last year for Yorkshire; this time around we went across the Pennines to see what kind of data we could retrieve from the ...


    By Cirrus Research plc

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