Environmental Acoustics Articles

  • Invictus 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 Maidenhead and ...


    By Cirrus Research plc

  • Sound Absorption for All Saints Church Community Centre

    Acoustic specialists, Sound Reduction Systems (SRS Ltd) were approached by All Saints Church with a view to treating the poor acoustics within their community centre. They had recognised that high levels of reverberation and echo were affecting the various groups that used the space, and were looking for a solution that was both effective and decorative. Initially, Mr Les Munns (Church Building ...


    By Sound Reduction Systems Ltd

  • MapAtWork - an efficient tool for making contour maps for workplaces

    General purpose interpolation software has an overkill of functionality for making a simple contour map based on measurements. MapAtWork and NolseAtWork software will significantly reduce the time you would normally spend on getting your maps done. The Bio plotter I started at DGMR in 1981 as acoustic consultant. At that time there was no software available for making nice ...


    By Softnoise GmbH

  • Numbers don’t Lie, PCCP performance and deterioration based on a statistical review of a decade of condition assessment data

    Abstract Since the late 1990s there have been numerous inspection and monitoring projects focused on identifying and quantifying wire break damage in PCCP water and wastewater pressure mains. The pressing need to identify and manage deterioration of PCCP has resulted in the rapid development of a small but highly focused niche industry of condition assessment of PCCP mains. During this ...

  • Rolling machine enclosure case study

    Process details Rolling machine used to manufacture exercise books for schools Supply Acoustic enclosure 7.7m long x 6.5m wide x 3m high Special requirements Unit designed to allow very easy access and numerous cutouts/feed chutes while maintaining an excellent acoustic performance. Performance ...


    By Wakefield Acoustics Ltd

  • The Significance of Sound Diffraction Effects in Predicting Acoustics in Ancient Theatres.

    Abstract This paper examines the effect of sound diffraction in predicting sound propagation in ancient theatres. Few simulation studies to date concerning ancient theatre acoustics were conducted with diffraction effects. While sound diffraction effects in ancient theatres are known qualitatively, rarely have they been quantitatively documented. In this paper, the ancient theatre of ...

  • OTT ADC measurement - Germany

    Background As the open pit Cottbus Nord is making use of the water of the ponds in the protected landscape of Lakoma (a village 6 km from Cottbus) the Vattenfall Europe Mining AG (VEM) as owner of the pit was obligated to take compensation measurements. VEM entrusted the engineers of the gerstgraser Ingenieurbüro für Renaturierung (gIR) in Cottbus with the planning of the ...


    By OTT HydroMet

  • Bridging the university-industry gap to design a silent aircraft

    Drawing from the expertise, knowledge and technology of an extensive network of partners, including the UK’s Civil Aviation Authority, Rolls-Royce, Boeing and Luton Airport, the Silent Aircraft Initiative has resulted in some truly innovative approaches to noise reduction. With a structured plat form that allows progressive improvements and stakeholder involvement, the total solution is ...

  • Structural acoustic modelling of three dimensional enclosed sound fields with active/passive piezoelectric networks

    In this paper, analytical effort for modelling piezoelectric-structural acoustic interactions of sound transmission through a flexible smart panel into an enclosure is presented. A spherical wave is transmitted into a rectangular enclosure through a flexible panel, while piezoelectric patches, bonded on the panel, are used as actuators and /or passive dampers. The developed model accounts for ...


    By Inderscience Publishers

  • Case study - Man-Made River Authority (MRA)

    Service: SoundPrint® AFO Client: Man-Made River Authority Project Date: Ongoing since 2004 Location: Ajdabiya, Libya Type of Pipelines: Raw Water Transmission Mains Diameter: 158-inch (4 meter) Pipe Material: PCCP Length: 1,200 km Results: 35,000 wire breaks as of 2011 Libya's Man Made River With more than 4,000 km of mainly four-metre diameter ...

  • World Class Indoor Acoustics

    On January 15th, 2005, the $440 million, new Copenhagen Opera House opened with a Royal Command Performance and the tones of Carl Nielsen, Donizetti, and Rossini. Likening the sound to the gift of a Stradivarius, the Royal theatres musical director was thrilled. It is a world class acoustic he commented, that at the same time is analytical, warm and round. Every subtlety, even the very quietest, ...

  • Case study - Fred Hartman Bridge - Harris County, Texas

    Service: SoundPrint - Bridges Client: Texas Department of Transportation (TxDOT) Project Date: 2002 Type of Bridge: Fan arranged cable-stayed bridge Length: 4.185 kilometres (2.60 mi) The Fred Hartman Bridge was opened to traffic in 1995 and is one of the largest cable stayed bridges in the United States. The cable stayed bridge portion of the bridge ...

  • World class acoustics on the waterfront

    This opera house balances the intimate and the very loud.” The guest conductors, opera directors, music staff and the chairman of the orchestra were equally delighted with the sound achieved. English consulting company Arup Acoustics, responsible for the design of the new opera house’s acoustics, chose ODEON modelling software for this and for many of its other major projects within ...

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