Environmental Acoustics Applications

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  • Category: Health & Safety ×

  • Subcategory: Environmental Acoustics ×

For Sports Facilities

by Troy Acoustics Corporation     based in Brunswick, GEORGIA (US) (USA)

Troy Acoustics and its personnel have been involved in the Broadcasting, Movie and Recording industries for well over thirty years. Troy Acoustics has designed and installed acoustical treatments for dozens of facilities, for both new and updating purposes. The Troy System products, designs and installation techniques have provided quality, noise free, environments for all types of facilities where original programming is produced, enhanced or modified.

Noise monitoring solutions for electroacoustics

by Brüel & Kjær Sound & Vibration Measurement A/S     based in Nærum, DENMARK

Manufacturers of electroacoustic equipment such as loudspeakers, microphones, telephones, headsets, hearing aids, hydrophones, etc., have, for many years, successfully developed new innovative acoustical designs and introduced these into the market in the form of high-quality products.

2-Channel sound insulation for building acoustics

by Brüel & Kjær Sound & Vibration Measurement A/S     based in Nærum, DENMARK

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.

Wind Farm Noise Assessment by XL2

by NTi Audio AG     based in Schaan, LIECHTENSTEIN

One of the largest acoustic consulting firms in Australia was engaged by the New South Wales Department of Planning & Industry to conduct wind farm noise assessments. The goal was to perform a specialist, independent acoustic compliance audit of three major wind farms located near Canberra, Australia’s capital city. The objective of the study was to conduct a detailed noise assessment at residential dwellings near to the wind farms. Three wind farms near Canberra, Australia, were investigated. XL2 Sound Level Meters were operated on a continuous basis, typically over a six week period at each wind farm. The XL2 was battery powered to enable continuous noise logging for two weeks at a time at each residential site. The recorded data was then processed in accordance with the relevant standards specified in the conditions of consent for wind farms.

Pulsar noise testing equipment for construction industry

by Pulsar Instruments plc     based in Filey, UNITED KINGDOM

The construction sector and its wide range of associated activities are very varied and from a noise monitoring perspective offer many unique challenges. However, Pulsar Instruments have a solution; a construction Pulsar noise meter with the ability to effectively assess the following two key categories; Noise at Work (potential for noise induced hearing loss due to long term exposure to noisy activities). Environmental Noise (the potential to cause annoyance to surrounding areas or buildings during site work).

Sound Instrumentation for Calibration

by Norsonic AS     based in Lierskogen, NORWAY

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.

Noise monitoring solutions for room acoustics

by Brüel & Kjær Sound & Vibration Measurement A/S     based in Nærum, DENMARK

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 and vibration problem solutions for transportation & infrastructure sector

by Acoustic Associates Sussex Ltd     based in Shoreham Airport, UNITED KINGDOM

Roads, railways and airports are the largest source of transportation noise and frequently effects development land for houses, schools and hospitals. Noise sensitive developments adjacent to or affected by transportation noise require the careful assessment of these sources, either by measurement or prediction and often both. This assessment enables the correct specification of the building envelope (walls, windows, ventilators and roofs) to achieve appropriate internal noise levels in new developments. Here social housing providers are often at the forefront of providing superior internal ambient noise climate for their tenants and require precise specification of glazing and ventilation systems. New or altered forms of transportation sources near to existing noise sensitive sites also require careful assessment to minimise impact.

Sound Instrumentation for Building Acoustics

by Norsonic AS     based in Lierskogen, NORWAY

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.

Noise and vibration problem solutions for industrial & environmental sector

by Acoustic Associates Sussex Ltd     based in Shoreham Airport, UNITED KINGDOM

Acoustic Associates have been involved on numerous large scale projects, in the quarrying, mining, power generation and waste management sectors where the Secretary of State required full Environmental Impact Assessments (EIA) to be able to properly assess and balance the suitability and sustainability of large scale developments. Acoustic Associates can provide the noise chapters for these EIA’s and are happy to work in interdisciplinary teams to provide co-ordinated and seamless reports. Acoustic Associates has developed detailed knowledge of the renewable energies sector with particular interest in wind power, bio-generation and waste management projects, where though understanding of the physics of acoustics, the planning environment and commercial constraint need to be brought together.

Sound Insulation solutions for building acoustics

by Brüel & Kjær Sound & Vibration Measurement A/S     based in Nærum, DENMARK

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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