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Noise Monitoring Applications

  • Noise monitoring solutions for production testing

    The word `quality` is generally used in connection with expensive items and luxury goods. Nowadays, the quality of their product is what suppliers and sub-suppliers live by. Customers, world over, demand and expect it. In manufacturing, much effort has gone into `engineering in` quality by carefully optimising the design and production methods. However, a variety of manufacture and assembly faults often result in unacceptable noise and vibration levels in manufactured products. There is still only one method that makes absolutely sure that every item coming off the production line fulfils expectations. That method is production line testing, where every unit produced gets checked as part of its production cycle.

  • Noise Monitoring for Industry

    For Industrial Noise Monitoring applications, Cirrus Environmental can supply a range portable, semi-permanent or permanent noise monitors as well as the MK:427 NoiseSensor for integration into existing data logging systems.

    By Cirrus Environmental based in Peterborough, UNITED KINGDOM.

  • 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 structural dynamics

    Everything needed to analyse the dynamic behavior and properties of structures, from a supplier of renowned quality. Brüel & Kjær is a ‘one-stop shop’ that offers a comprehensive range of application software, front-end hardware, modal excitation systems, impact hammers, transducers and accessories. At the core of a Brüel & Kjær system is the PULSE analyzer platform, which provides powerful applications and highly flexible hardware configurations.

  • Noise monitoring solutions for room acoustics

    Room Acoustics concerns the way sound is created, propagated, perceived, measured and modelled inside enclosures. Enclosures can be dwellings, offices, workshops, factory halls, lecture rooms, auditoria, concert halls, transportation terminals, etc. Reverberation Time is the single most important parameter used to describe Room Acoustics, but in addition, parameters describing music quality and speech inteligibility are important.

  • Noise monitoring solutions for machine diagnostics

    Due to production and assembling tolerances, wear and load variation, the moving parts in any rotating machine will sooner or later cause annoying vibrations that eventually lead to breakdowns.

  • 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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