![]() Type of diffractor, which is now being developed and used to diffract tire-roadĪbout a decade ago, we started our journey by computer simulations. The air? It is exactly this feature of diffraction that is exploited by a novel Waves, why not bend it into a direction where it is less annoying…like up in This makes the obstacle less efficient in blocking noise, and it is thereforeĬonsidered to be something negative for noise barriers. Sound bends around the obstacle and can be heard by a listener behind that The obstacle is in the same order of magnitude as the wavelength of the sound), For lower frequencies (or more precisely, if the size of Only in the (very) high-frequency limitĭoes an obstacle create a shadow region, and sound cannot be heard if the sound Universities all over the world, the term diffraction is taught toĭescribe the physical phenomenon of bending sound waves around an obstacle into To reduce traffic noise, and these new measures may even have additional Sound pressure level at the listener’s position. These measures work fine and effectively to lower theĮmitted sound, absorb the sound, or induce reflection of sound, reducing the overall Smoother pavement), smoother tracks and wheels, rail dampers, and possibly more Silent car and truck tires, quieter road surfaces (more open, absorbing, and Undoubtedly, this increase in traffic comes with an increase in noise pollution, and despite all our efforts to reduce it, traffic noise is still a huge problem and considered a health risk.Ĭlassical solutions to reduce noise are more More cars, more trucks, more trains, and more airplanes are needed to transport us and all the stuff we need. ![]() Introducing Silencio – A Community-powered Network for Hyper-local Noise Pollution Dataĭate published: 26 March 2020 Tags: noise control, noise pollution, transportation noiseĪs population increases, so does transportation.Welcome to the June 2023 issue of Noise News International.Welcome to the September 2023 issue of Noise/News International. ![]() SoundPLAN Presents New and Enhanced Noise Analysis Software at Inter-Noise.What I Learned from the 2023 Technology for a Quieter America Workshop.Call for Submissions: Special NNI Issue Exploring All Aspects of Aircraft Noise.Launching a New Acoustics Research Center in Galway, Ireland.Book Review - Occupational Noise and Workplace Acoustics: Advances in Measurement and Assessment Techniques.Book Review - Design, Modeling and Reliability in Rotating Machinery. ![]()
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