portable sound level calibrator Articles

  • 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 ...

  • 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

  • Biogas in Asia

    The development of biogas production and monitoring has had many twists and turns, from its early days in Germany to the heady days of support through the Clean Development Mechanism (CDM).   The fall in the price of carbon credits, which rewarded reduction in emissions of methane (CH4) - a potent greenhouse gas - and use of methane from waste as renewable energy, has hit Asia ...


    By Geotech

  • 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

  • Read about Confined Space in Construction and Atmospheric Testing Right Here!

    In 1993, 29 CFR 1910.146 went into effect as the first federal legislation governing entry into permit-required confined spaces in general industry. Because some industries, such as the construction industry, were covered by specific Occupational Safety and Health Administration (OSHA) safety regulations, they were exempt from the confined space entry requirements of the general industry rule. ...


    By Argus-Hazco

  • CO2 Gas Hazards in the Brewing Industry

    The hazards associated with CO2 in the brewing industry are well known, yet people still die needlessly every year in tragic and completely avoidable accidents in breweries. Just last year in Germany, which has a good safety record, two workers died in separate incidents at the same brewery. In the first incident, the owner was found dead with his head and torso in a beer mixing tank. It is ...

  • A new DIRAC measuring speech intelligibility

    History   Speech intelligibility relates to the sound intensity modulations in the talker’s voice, as described by Houtgast et al. [1]. This principle is used to determine speech intelligibility from the remaining modulation at a receiver position, using a modulated noise source at the talker position. The noise spectrum represents that of a human voice, and modulations at ...

  • Understanding the Benefits of Fixed Gas Detection

    "Fixed gas detection is an essential method of ensuring maximum protection for personnel and plant. There are a variety of technologies available for a multitude of applications. Understanding fixed gas detection is the first step in providing safety." What is fixed gas detection? Fixed gas detection is installed with the aim of providing continuous, area and personnel protection. ...


    By a1-cbiss

  • Performance-Based Measurement Systems

    Many of the Environmental Protection Agency's (EPA's) methods used to monitor air, water and soil for environmental contaminants prescribe step-by-step details on how the chemical analysis must be conducted and prohibit any deviations or variations. The EPA has recognized that monitoring equipment and technology have improved tremendously over the last few years; that environmental media do not ...


    By WSP | Parsons Brinckerhoff

  • 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 ...

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