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sound measuring Applications

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    Sound instrumentation for measuring sound

    What is the difference between sound and noise? Clearly more than the loudness only. Although an aircraft is very noisy, a mosquito at night-time can be more than enough to spoil a good night`s sleep. Instead of looking at the loudness only as a criterion for the degree of noisiness, we shall simply regard noise as what it is - viz. unwanted sound.

    By Norsonic AS based in Lierskogen, NORWAY.

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    Sound level measurement for safety regulations

    Hand held instruments for the measurement of an employee`s noise exposure. Frequency analysis within Sound Level Meters can also be used to determine the correct selection of hearing protection.

    By Casella based in Kempston, UNITED KINGDOM.

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    Sound instrumentation for calibration

    Unfortunately, the word calibration has ended up having two meanings; viz. to describe the use of a sound calibrator in connection with a measurement and to describe periodic verification which is carried out in a Calibration Laboratory.

    By Norsonic AS based in Lierskogen, NORWAY.

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    Sound level meters & Noise dosimeters for Noise nuisance measurement industry

    Neighbour Noise, Environmental Noise & Community Noise. Noise nuisance is a growing issue that continues to hit the headlines. Whether it`s noisy neighbours, barking dogs or music events, the need to measure noise nuisance is rapidly increasing.

    By Cirrus Research plc based in Hunmanby, UNITED KINGDOM.

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    Sound level meters & Noise dosimeters for Motorsport noise measurement and monitoring industry

    Our noise measurement instruments are used at high profile circuits and venues around the world, helping owners, operators, teams and officials comply with noise limits and regulations. With a range of noise measurement tools including drive-by test systems with permanently installed and portable monitors for continuous measurement of vehicles, to handheld sound level meters for pre and post race scrutineering, we can help you monitor and control your noise levels on track, in the pits and in the surrounding environment.

    By Cirrus Research plc based in Hunmanby, UNITED KINGDOM.

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    Sound level meters & Noise dosimeters for Vehicle noise measurements industry

    The noise from vehicles such as cars, buses and trucks is wide spread with many people being affected by these noise sources in their daily lives. All modern vehicles will be designed to meet strict safety and emissions standards as well as noise output levels. All vehicles sold in the EU must comply with a range of noise directives to ensure that they meet these specified noise levels when they are sold and many countries enforce regular checks over the life of the vehicle. Motor Sport noise is a often a source of enjoyment for those taking part and for spectators. The impact of motorsport activities on the surrounding environment is also of major concern to many people who live near to venues as well as to those operating the circuits, tracks and venues.

    By Cirrus Research plc based in Hunmanby, UNITED KINGDOM.

  • Sound Insulation solutions for building acoustics

    Sound energy does not remain in the room where it is produced, but propagates throughout the building by any available path, intruding into other rooms as noise. Each country has its own standards of sound insulation in buildings, but it is measured in the same way all over the world. The noise levels in the two rooms under investigation are measured and subtracted, and the level difference is corrected for the influence of the reverberation time and background noise level in the receiving room. The measurements and calculations are made in 1/1- or 1/3-octave bands and averaged over a number of positions in the rooms. Finally a single-number index is calculated by averaging over all the frequency bands.

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    Sound instrumentation for vibration

    Vibration is simply defined as the variation of an object about a fixed position. To properly define and quantify the physical characteristics of vibration, however, is much more complex - account must be taken of the direction, frequency and magnitude of vibration. Then, what properties should be measured? Is it appropriate to measure the displacement of the vibrating object as a measure of its amplitude, or should we instead measure velocity, or acceleration? What are the conventions for measuring direction, and is it really important?

    By Norsonic AS based in Lierskogen, NORWAY.

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    Sound instrumentation for motorsport noise

    Norsonic is a world-leading supplier of sound measuring equipment for the motorsport industry. We have a long experience in supplying sound measurement solutions for racetracks, ranging from single noise monitors to large multichannel monitoring solutions with sophisticated reporting system.

    By Norsonic AS based in Lierskogen, NORWAY.

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    Sound instrumentation for building acoustics

    The field of building acoustics consists of two parts; Room Acoustics which deals with sound propagation in a room and Building Acoustics, which deals with sound propagation between rooms. Typically, room acoustics is related to the quality of sound, e.g. concert hall acoustics, while building acoustics is more related to unwanted sound, i.e. when you want to hear as little as possible of what is going on in adjacent rooms. From a measurement technology point of view, the two have a lot in common which shall be outlined here.

    By Norsonic AS based in Lierskogen, NORWAY.

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    Sound instrumentation for industrial hygiene

    Industrial hygiene is separated into two main applications - Noise at Work and Human Vibration. Norsonic has during the past year expanded the product portfolio to cover both applications. By close cooperation with our customers and health and safety research institutes we have designed a carefully balanced selection of measuring tools and application software that covers both the vibration and noise domain.

    By Norsonic AS based in Lierskogen, NORWAY.

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    Sound instrumentation for environmental noise monitoring

    State of the art noise monitoring systems; Modern noise monitoring systems offer a wide range of advanced features and come with software that can analyze and structure long term measurements data efficiently. A complete noise monitoring system consists of one or more noise monitoring terminals, a noise server and work stations for presentation, post processing and reporting.

    By Norsonic AS based in Lierskogen, NORWAY.

  • 2-Channel sound insulation for building acoustics

    Façade sound insulation is measured like sound insulation between rooms, except that one `room` is actually open space. The sound level is measured inside the receiving room and outside the façade of the building. The level difference is then corrected for the influence of the reverberation time and background noise level in the receiving room. Finally a single-number index is calculated by averaging over all the frequency bands. A loudspeaker source can be used for the measurement, giving a choice of sound incidence angle. But in practice, placing the loudspeaker and getting a high enough sound level can be difficult.

  • Noise monitoring solutions for sound intensity mapping

    Sound Intensity is the measure of acoustic energy passing through a unit area. By integrating over a surface enclosing an object under test, you can calculate the object`s sound power. This can be done regardless of background noise, allowing convenient, in situ measurements of sound power. Other advantages of sound intensity measurements include the ability to determine the directionality of sound, and to quickly localise noise `hot spots`. Mapping software takes this a stage further by providing you with a contour map of noise levels to provide intuitive documentation of noise problems.

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    Sound level meters & Noise dosimeters for Construction industry

    Construction can be a industry where high noise levels are common and where both occupational and environmental noise monitoring may be needed. The measurement and monitoring of noise from construction sites can be carried out using a range of different instruments depending upon the time over which the measurements need to be made.

    By Cirrus Research plc based in Hunmanby, UNITED KINGDOM.

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    Short term noise measurement for safety consulting

    For environmental noise monitoring when short measurements are required using a hand held Sound Level Meter. This could be for boundary monitoring of industrial sites or noise surveys for planning purposes.

    By Casella based in Kempston, UNITED KINGDOM.

  • Pulsar noise testing equipment for vehicle noise measurement industry

    In a world where there is a drive for everything to be quieter, vehicle noise measurement and control is a growing application. If measurements need to be made to ISO 5130:2007, which is an internationally recognised standard for vehicle exhaust noise testing, a more detailed measurement needs to be made. ISO 5130:2007 requires three consecutive measurements to ensure repeatability. These measurements are taken at a specified engine speed, or RPM, and the maximum sound level produced during the test is taken.

    By Pulsar Instruments plc based in Filey, UNITED KINGDOM.

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    Noise monitoring for workplaces

    Measurement of the noise exposure of an individual over the working day. They should be used for mobile workforces where it is not always practical to measure with a hand held Sound Level Meter.

    By Casella based in Kempston, UNITED KINGDOM.

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    Test Kits and Photometric Methods for agriculture, in food or water analysis

    When analyzing water and food, trust plays a very important role. Only careful analysis using tests that are performed correctly and are delivering sound results will help to maintain and improve our quality of life. With ready-to-use tests and test systems from Merck Millipore, you can trust your results. Our broad product range covers everything from water analysis to the control of production process up to the measurement of special food parameters.

    By Merck KGaA, Darmstadt, Germany based in Darmstadt, GERMANY.

  • Seismic Monitoring

    With Sound Velocity through the water being of prime importance during seismic surveys, Valeport offer a variety of sensors and probes to measure sound velocity with an unsurpassed accuracy level.  Whether you require just a sensor or a SVP for profiling, we have products for surface use and up to 6000m depth operation.

    By Valeport Ltd based in Totnes, UNITED KINGDOM.

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