acoustic technology Articles

  • Fine-tuning acoustic isolation in buildings

    ACCIONA Infrastructure is ranked among the leading construction companies in the world - and is recognised for implementing the most advanced and innovative technology.  As research and design is vital to keep the company at the cutting edge in relation to technological developments, ACCIONA Infrastructure created a team to analyse noise and vibration. Where traditional ...

  • Distributed Thermal-Acoustic Data Integration

    Silixa has developed a technique called Distributed Thermal Acoustics (DTA) to monitor simultaneously the thermal and acoustic profile along a hybrid optical fibre cable in submarine environments. Using its world leading distributed fibre optic technology (ULTIMATM DTS and iDASTM) Silixa deployed an optical fibre cable along the seabed and across the water column in an active gas seepage ...


    By Silixa Ltd

  • 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 ...

  • Acoustic fingerprinting for rock identification during drilling

    During the process of mining, it is imperative to know the type and properties of the rocks being handled. The current technology for this involves core drilling, and subsequently subjecting the drilled cores to various tests in the laboratory, to identify the rocks and establish their properties. In many cases, obtaining a sample may be cumbersome and/or non–profitable. This paper presents a ...


    By Inderscience Publishers

  • 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

  • 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

  • Short-term noise monitoring with Delta Acoustics case study

    Noise monitoring does not require a large amount of expertise or investment in expensive equipment. DELTA learned how measurement projects with high technology demands could easily be solved with a Noise Sentinel On Demand subscription. Challenge Demands for quick calculation validations on noise measurements that had to comply with strict ISO regulations ...

  • 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 ...

  • Rapid detection of sewer defects and blockages using acoustic-based instrumentation

    Sewer flooding incidents in the UK are being increasingly associated with the presence of blockages. Blockages are difficult to deal with as although there are locations where they are more likely to occur, they do occur intermittently. In order to manage sewer blockage pro-actively sewer managers need to be able to identify the location of blockages promptly. Traditional closed-circuit ...


    By IWA Publishing

  • Dynamic rotary torque measurement using surface acoustic waves

    The subject of torque measurement has previously been addressed extensively. Most of the existing transducers either rely on low voltage analogue systems (e.g. conventional resistive strain gauge) or complicated mechanical assemblies by physically assessing displacement, i.e. optical systems. This paper identifies a new, potentially low cost, non-contact, frequency domain strain torque sensor1 ...


    By Sensor Technology Ltd

  • A novel acoustic imaging tool for monitoring the state of rapid sand filters

    A new technology based on acoustic waves is developed to monitor the state of sand filters used in drinking water treatment. Changes in the sand filter, due to the removal of suspended particles from the water and their accumulation in the pores, result in an increase of the bulk density and acoustic speed of the granular material. Consequently, the reflected acoustic response changes as the ...


    By IWA Publishing

  • Flow Profiling on Demand – Illuminating the reservoir with Silixa’s intelligent Distributed Acoustic Sensor (iDAS) and ULTIMA Distributed Temperature Sensor (DTS)

    As energy demands increase rapidly, the goal of energy companies is to maximize ultimate recovery in an economically sound manner. One critical capability is the accurate measurement and monitoring of production from individual layers / perforated intervals in a multi-zone completion. This data allows operators to optimize zonal production, improve recovery, increase production per well and ...


    By Silixa Ltd

  • Development of a long duration, free swimming, inline acoustic leak detection inspection tool

    Abstract Acoustic leak detection inspection tools have become a common technique to identify minute pipeline leakage before the leak and the defect producing it can become a larger problem or even a rupture level event. While these inspection tools only identify small ...


    By Pure Technologies

  • Sooty tern conservation - Scarecrow bio-acoustic systems play a part in sooty tern conservation

    Scarecrow Bio-Acoustic Systems, a leading international innovator in bird dispersal technology has been instrumental in helping the Sooty Tern recolonise one of its former nesting sites, bringing the seabird back to Denis Island in the Seychelles, after an absence of over one hundred years. Until recently, Uckfield based Scarecrow Bio-Acoustic Systems Ltd has been renowned for developing leading ...


    By Scarecrow

  • Dutch Utility Inspects Rising Main With Acoustic Tool And Reduces Risk On Critical Asset

    It’s a major event when you’ve been asked to perform a first in terms of a pipeline inspection. For starters, you must feel confident in the inspection technology you recommend. Second, you hope that all your planning for deployment and unexpected contingencies has been anticipated. And finally, with so many eyes focused on the outcome, you hope the first inspection of its kind goes ...


    By Pure Technologies

  • Intensifier of Technological Processes

    Magnetic Vortex Activator (Intensifier of Technological Processes) – ABC velocity layer machine is quill cylinder made from non-magnetic material. In the interior of intensifier locate non-equlaxial ferromagnetic particles. On the outside of intensifier locate inductor with the system of winding which create electromagnetic field. That field activate compound motion of particles and ...


    By GlobeCore GmbH

  • Engineers torque technology to medics

    Medical experts and sports scientists are becoming increasingly reliant on engineers as their disciplines become more and more technical. Mark Ingham looks at some of the projects his company, Sensor Technology, has helped behind the scenes. Like most rugby players I took my knees for granted until the day a twisting fall resulted in a torn anterior cruciate ligament. Fortunately these days it ...


    By Sensor Technology Ltd

  • Transducer shadow correction for applied technologies Sonic K-Probe

    In the K-probe, as in many sonic probes available today, the transducers at the ends of its acoustic paths cast a "shadow" on the paths, causing the measured wind velocity component along the path to be underestimated. The degree of attenuation is a function of the angle between the wind direction and the acoustic path which increases with decreasing angle, reaching a minimum at 0°. At angles ...

  • Get the scoop on the newest technology for the measurement of pH

    SENTRON had its 20th birthday in April 2005 and is world wide known as the manufacturer of glass free ISFET (Ion Sensitive Field Effect Transistor) pH systems. During the 20 years we developed and manufactured not only ISFET pH sensors but also pressure sensors in our own silicon chip production facility. This facility for development and manufacturing of solid-state sensors, enables us to ...


    By Sentron Europe BV

  • Technology transfer is more important than innovation

    Innovation, we are told, is the key to a successful manufacturing economy. Invent and patent something and you will make money on every one made - if it is mass produced you get an on-going income. Tony Ingham of Sensor Technology Ltd looks at his experience over two decades and tries to draw some general principles that may help Britain in its new ambition to rebuild the manufacturing base. We ...


    By Sensor Technology Ltd

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