portable noise Articles

  • CR:245 Portable Noise Monitor – Motor Racing Noise Application case study

    The CR:245 series consists of self contained Portable Environmental Noise Monitors, ideal for short and medium term measurements for applications such as industrial, airport, transport and construction. Both periodic environmental groups and recognised noise events are stored, along with a 7 Day Noise Profile (time history). Operation is very straightforward simply press the start button to ...


    By Cirrus Environmental

  • Weather Data for Noise Monitoring

    “Weather conditions are the single largest variable factor in how sound travels over large distances,” says Steve Bilawchuk principal partner and engineer at ACI Acoustical Consultants Inc. “Wind speed and wind direction are of crucial importance.” ACI is an acoustical engineering consulting company based in Alberta, Canada, which uses ...

  • Urban Noise Monitoring in Madrid

    Dynamic mapping helps Madrid improve the quality of life for her citizens and visitors alike. With its 3 000 000 inhabitants and 2500 km of streets, Madrid is an excellent example of what can be done to improve human comfort related to urban noise. Since the late 60s, Madrid City Council has been working on noise problems. During this period, global environmental analysis has focused on how ...

  • What is Long Term Noise Monitoring?

    It might sound simple, but long term noise monitoring can mean different things to different people. There is no standard definition for what long term noise monitoring is, but here is a summary that covers the basics. I first presented this presentation at the IOA Eastern Branch meeting and wanted to share my thoughts on what classes as long term noise monitoring. I’ll also discuss ...


    By Cirrus Environmental

  • Noise at Work Regulations: 10 Years On

    Doesn’t time fly? It’s already been 10 years since Control of Noise at Work Regulations were introduced in the UK. But have you been following the legislation correctly? Here’s an overview of what the Noise at Work Regulations mean and some common mistakes you should be avoiding. Considering that legislation to limit ...


    By Cirrus Environmental

  • An Industrial Noise Map is Basic to Hearing Conservation

    An Industrial Noise Map Is Basic to Hearing Conservation In the U.S., OSHA has set regulations on worker noise exposure. The usual measurement method is to use a portable noise dosimeter attached to a worker that measures noise exposure as the person moves about the work area. However, this does nothing to identify the source and location of the noise. When conducing a noise survey, a noise ...

  • Nanomaterial resistive sensors: noise, power, and circuit interfaces

    Nanoscale materials such as carbon nanotubes and silicon nanowires offer the exciting prospect of enabling low cost, low power, highly sensitive detectors for a wide variety of chemical and biological materials. The potential of these materials in sensing applications has been demonstrated by researchers around the world. However, several challenges remain to transition this technology from ...


    By Inderscience Publishers

  • Where to use Outdoor Noise Monitoring Equipment?

    Noise monitoring equipment is required for environmental noise applications that need to be monitored over a period of time and where a hand-held sound level meter taking on the spot noise measurements would not be suitable. Noise Monitoring Equipment from Cirrus Environmental The Invictus range can ...


    By Cirrus Environmental

  • Planning a Successful Construction Noise Monitoring Solution

    Large scale construction projects, especially those located in built up areas, are the most difficult to manage in terms of noise levels emitted from site operations. The nature of the environments in which these projects are located often makes construction noise monitoring difficult. Cirrus Environmental was tasked with producing a successful solution. ...


    By Cirrus Environmental

  • Invictus noise monitor on the right track- Case Study

    An international acoustic consultancy was engaged by contractor Balfour Beatty on behalf of the end client Network Rail in this landmark project that is revolutionising transport across London. The Project: The new rail link will help cut journey times to the heart of the capital by two thirds in some cases, passing through 37 stations and running 118km from ...


    By Cirrus Environmental

  • CR:245/SP Semi-Permanent Noise Monitor Semi-Permanent Noise Monitoring System example application case study

    Project Summary An industrial site in a remote location needed to monitor, measure and control boundary noise levels over the lifetime of a lengthy decomissioning and demolition project. Weather protection and reliability were top of the list for this application due to the remote location. A number of semi-permanent noise monitors were installed with data downloaded remotely over a ...


    By Cirrus Environmental

  • 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 ...

  • Everything You Need To Know About Festival Noise Monitoring

    Festival Noise Measurement Accomplishing a good balance between the needs of event organisers and compliance bodies, such as local authorities, and nearby affected communities can be a challenging task when monitoring and managing the noise at large music events or festivals. Noise monitoring is essential anywhere where high noise levels could be in breach of the stipulated event ...


    By Cirrus Environmental

  • Demolition Noise Monitoring with John F Hunt - Case Study

    Cirrus Environmental has enjoyed a long alliance with John F Hunt Demolition going back over many years, so much so, the company’s Health, Safety & Environmental Department has accumulated almost an historic arsenal of Cirrus equipment that charts the journey of noise monitoring over the years. About John F Hunt Demolition The ...


    By Cirrus Environmental

  • Pinpointing Low Level Sanitary Noise in Apartment Building Case Study

    Problem A newly built apartment building consists of several floors with multiple apartments on each floor. One of the ground floor apartments is disturbed by sanitary noise from the apartment above, which is heard whenever the toilets in the top apartment are being flushed. The sanitary noise is heard in several rooms, and the level was measured to be around 30 to 35 dB, which is above ...


    By Norsonic AS

  • GKN aerospace success with portable impedance meter

    The GKN site in Cowes, Isle of Wight, UK, has long experience in the design and manufacture of passive sound insulation systems for air-intakes and by-pass ducts of aircraft engine nacelles. Dr. Armando Vavalle, Technology Development Engineer from GKN reports here on impedance tests conducted with Brüel &Kjær’s Portable Impedance Meter Type 9737 for the development of such ...

  • Knowing about the Convenient and Portable Gas Pressure Washers

    Gas pressure washers are among the most popular power wash systems. These machines are convenient alternatives to electric pressure machines, which cannot run without electricity. Gas pressure washers may even be the first choice for many contractors where gas prices are low and gasoline is easily available. Gas pressure washers are popular in industries, including car wash and agriculture. ...


    By Daimer Industries Inc.

  • CR:245/SP Semi-Permanent Noise Monitoring System example application case study

    Project Summary For a large construction site, noise monitoring was required at the boundary nearest to residents. As the construction progressed, the noise monitor would be moved to the next designated location. Security of the equipment was paramount in this urban environment as the site was not always secure. The measurement data needed to be downloaded remotely using the ...


    By Cirrus Environmental

  • Portable Fourier transform infrared spectroradiometer for field measurements of radiance and emissivity

    A hand-held, battery-powered Fourier transform infrared spectroradiometer weighing 12.5 kg has been developed for the field measurement of spectral radiance from the Earth’s surface and atmosphere in the 3–5-µm and 8–14-µm atmospheric windows, with a 6-cm21 spectral resolution. Other versions of this instrument measure spectral radiance between 0.4 and 20 ...


    By D&P Instruments

  • Diesel Particulate Filters for Gensets in New York City

    Description Various portable diesel powered gensets, operating in a downtown urban environment (Manhattan, New York City). The gensets are used for powering construction equipment in a subway expansion project. Challenge The diesel particulate filters were required to meet local standards for particulate reduction. The units were expected to operate maintenance free despite the low ...


    By DCL International Inc.

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