acoustic consulting Articles

  • 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, ...

  • 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 ...

  • Sarakasi Theatre - room acoustical measurements and modelling

    Measuring Reverberation Time and Speech Intelligibility using Balloons and an MP3 Player as External Sound Sources The non-profit organisation Sarakasi Trust owns a theatre in Nairobi Kenya, inside the former Shan Cinema. In this theatre, youths from the city slums are trained to be acrobats, so that they learn how to make a living without having to resort to crime. Shows and concerts are ...

  • ESTECH marks twentieth year with new acoustic testing site

    Situated less than 40 km from the centre of Tokyo, the two storey building has a hemi-anechoic chamber, an excitation test room and an associated test preparation room. The excitation test room, which can be flexibly partitioned, contains two structural beds isolated from external vibration. And two cranes capable of lifting up to 2.8 tonnes, for moving heavy structures such as engines, tractor ...

  • Ping-Ping, What’s That Sound? Acoustic Fiber Optic Technology Helps Identify Problematic Water Mains

    With the deteriorating state of many aging water mains found in cities across North America, urbanites are frequently witnessing unexpected plumes of water erupt as man-made geysers in their own metropolitan backyards. While natural geysers are awe inspiring, urban geysers are much less so, due to their destruction to property, roads and the environment. Because an uninterrupted water flow is the ...


    By Pure Technologies

  • Integrated Bird Management Scheme - An Integrated Bird Management System- an explanation of the use of bio-acoustics in the management of birdstrike risk

    An Integrated Bird Management System is just part of that evolution: a stated safety management policy that, when implemented, is designed to reduce the attractions for birds on an airport and then to disperse those birds that persist by bio-acoustic and other means. The responsibility for bird risk management does not stop at the perimeter of an airport, it will involve the evaluation of land ...

  • 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

  • Creating an entire country`s noise map - Case Study

    To comply with the European Union’s Environmental Noise Directive 2002/49/EC, member states are required to create updated noise maps for large urban areas and major transportation sources every five years. The English government commissioned a single project to calculate sound levels across the whole of England which resulted in the world's biggest noise map. ...

  • Case study - Woodroffe Avenue Transmission Main - Ottawa, Ontario

    Service: SoundPrint AFO PureRobotics Client: City of Ottawa Project Date: 2011 Location: Ottawa, Ontario, Canada Type of Pipeline: Water Transmission Main Diameter: 48-inch (1200mm) Pipe Material: PCCP The Woodroffe Avenue Transmission Main in Ottawa, Ontario experienced a major failure in January 2011 which opened a large hole across three traffic lanes causing major ...


    By Pure Technologies

  • Canarina CUSTIC software · background noise · ambient noise pollution · commands 13

    Bitmaps and scanned maps must be loaded into memory and then adapted to the program scale (we will make use of the Scale command). The X-Axis width (meters) in the program window can be easily changed to be able to compare both images (simulation results and background maps). Then, the X-Axis width (in meters) of the imported map and the X-Axis width (in meters) of ...

  • Noise at Work: Easier Noise Assessment & Control

    The Industrial Noise and Vibration Centre (INVC) Ltd has made its latest Digital Noise Assessment Template Available to all delegates who attend aFocus Health and Safety IOSH noise course. INVC have been providing a highly specialised acoustic consultancy service to a broad range of industries since 1985. They also deliver Noise at Work Risk Assessment and Control ...


    By Focus Health and Safety

  • Optimus and Invictus are the Classic Combination - Case Study

    Imagine a perfect summer’s evening with a 40-strong classical orchestra playing to an appreciative audience in a leafy green park. So far, so very English. Add in the fact the Park is in the heart of Lancaster city surrounded by thousands of homes and the orchestra is playing sets of the Hacienda’s classic 90s house music hits and you can understand the headache facing Acoustic ...


    By Cirrus Research plc

  • Romney Marsh Hydrometric Design

    HL was commissioned by the EA Southern Region, as sub-consultants to Halcrow Consulting Engineers, to undertake the feasibility and hydrometric design of 6 sites on streams feeding the Romney Marsh. On one of the streams, the Kent Ditch, it was necessary to design a two section/stage gauging station for which a Sarasota 2000 ultrasonic transit-time meter was installed. One measuring section was ...

  • Station Design, Rhomney Marsh case study

    EA Southern Region (via Halcrow) Design and supply of ultrasonic transit-time flow meter at a complex site on the Kent Ditch HL was commissioned by the EA Southern Region, as sub-consultants to Halcrow Consulting Engineers, to undertake the feasibility and hydrometric design of 6 sites on streams feeding the Romney Marsh. On one of the streams, the Kent Ditch, it ...


    By Hydro-Logic Services

  • Invictus noise monitor 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 ...


    By Cirrus Environmental

  • Short-term noise monitoring with DELTA - Case Study

    Acoustical expert, DELTA expanded its noise measurement capabilities by subscribing to Bruel & Kjaer's Noise Sentinel On Demand service. DELTA - one of the leading acoustical consultant companies in Denmark - accepted a project to measure airport noise. Making actual noise measurements and calculating how changes in air traffic affect the propagation of noise can be time consuming ...

  • Weather Data for Noise Monitoring

    “Weather conditions are the single largest variable factor in how sound travels over large distances,” says Steve Bilawchuk principal partner and engineer at ACI Acoustical Consultants Inc. “Wind speed and wind direction are of crucial importance.” ACI is an acoustical engineering consulting company based in Alberta, Canada, which uses ...

  • Case study - Aquascope 3 can be used by inexperienced operators to find leaks

    In 2006 the Calgary Water Authority in Canada engaged a British consultancy firm called “Hydrosave” to assist them reduce their leakage from 12% of all water supplied and ILI ratings of 4 – 8 between the different DMAs. The temperature in Calgary gets down to -40 degrees Celcius in the winter and the water board’s staff are fully occupied in winter, however in summer ...


    By Gutermann AG

  • Planning for shake down

    Design improvements at operating power plants continue to challenge plant staff and original equipment manufacturers (OEMs). While basic design calculations consider the capacity of components and stresses resulting from their use, few consider vibration issues in great detail in the design. Vibration can lead to instrumentation failure, cracking and fatigue damage, or early degradation of the ...


    By ABS Consulting

  • Composite construction products from waste tyres

    The construction industry consumes approximately 420 million tonnes of products per year, and therefore utilises large quantities of raw materials. Alternatives to primary materials in construction products are already widely used; examples include the use of construction and demolition wastes as aggregates, timber wastes in composite board products and by-products from steel-making in the ...

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