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Acoustical Engineering Articles & Analysis
19 articles found
For environmental consultants evaluating equipment authorization in 2026, the question of whether a high-end portable asphalt plant for sale can satisfy zero-leakage dust emission standards for urban green-zone projects depends entirely on the filtration architecture, burner combustion design, and acoustic engineering that leading asphalt plant suppliers ...
ByMacroad
This evolution represents a shift from treating noise and dust as unavoidable byproducts to viewing their elimination as a core component of ethical and sustainable operations. Acoustic Mitigation: The Engineering of Quieter Operations The acoustic footprint of a concrete plant originates from multiple sources: the aggregate handling systems ...
Design Considerations for Diesel RTGs Diesel RTG design requires careful attention to several components: Engine and Generator Sizing: The diesel engine must be capable of supplying sufficient power for simultaneous hoisting, trolley movement, and crane travel. Oversized engines lead to fuel inefficiency, while undersized ...
Addressing these requires a multi-faceted, engineered approach. For particulate control, modern plants deploy a hierarchy of defenses. ...
THE CLIENT The Client is a multinational manufacturer of mineral wood products, a world leader in industrial stone wool solutions, building insulation, acoustic ceilings, and engineered fibres. The Polish plant has 3 production lines with similar wastewater ...
Living or working in continual loud noise can be annoying – but did you know it’s bad for your mental health too? Whether you live next to a busy main road, with the constant hum of traffic, or you work in a noisy factory; excess noise can negatively impact your wellbeing. It can make you feel stressed and annoyed and it can also cause a lack of sleep, especially if it goes on for 24 ...
Solvay has signed an agreement with Safran to supply Halar® ECTFE high performance ECTFE for its LEAP1 engine acoustic panels. Film made from Halar® ECTFE with additional plasma treatment offers excellent adhesion to composite substrates providing superior aesthetic surface aspects to perfectly blend with its surroundings. Polymers as Protective Layer on ...
Japan has spent more than $3 billion on acoustic GPS over the past 10 years to monitor its dangerous offshore faults. By 2020, Japan's acoustic GPS network will include 27 stations, each consisting of multiple beacons. ...
Research vessels need soft mountings too, as noise from the hull can mask the sonar. To quieten noise from the engine, which can be transmitted to the hull, the engine is placed on a raft, which rests on acoustic absorbent mounts. ...
Not to mention the one produced by a virtuous neighbor, or not so virtuous, of some musical instrument, and that what for some may seem heavenly music to others is noise, that is, an unwanted sound, which comes to annoy us when we want rest at home. The experts in acoustics receive numerous calls from desperate neighbors who find no other way to vent their feelings than by ...
The Bio plotter I started at DGMR in 1981 as acoustic consultant. At that time there was no software available for making nice contour maps based on measurements in offices and industries. ...
This manuscript presents a fault detection method for a SI engine at variable speeds using acoustic signal technique. Two faults were addressed: misfire and the malfunction of manifold absolute pressure (MAP) sensor. The main objective is to detect these two faults by measuring the sound pressure level (SPL) in decibels (dBA) at different engine ...
Over the past 50 years, the characterisation of porous sound absorbing materials has been of increasing interest to both the acoustic engineers and customers. It is particularly important that acoustic engineers are able to predict the acoustical behaviour of these materials to get a quantitative measure of the ...
Dash of the vehicle poses an important role in attenuating the sound radiated from the engine cabin. The acoustical performance of a vehicle dash system is determined by the sound transmission loss (STL). ...
Keywords: sound quality, vibro–acoustic comfort, whole–body vibration, engine idling, idling sounds, vehicle interior noise, free verbalisation, RGT, semantic space, sound perception, vibration perception, vehicle noise, vehicle vibration, noise levels, NVH performance, psychoacoustic metrics, loudness, sharpness, roughness, fluctuation strength, ...
Noise is often one of the environmental variables where it seems more difficult to guarantee full compliance with legal limits in complex industrial situations and/or in other multi-source environments. This paper describes the application of noise mapping techniques to industrial sources, such as factories, power plants, wind farms, showing the potential of its use, both at the design stage as ...
In a second experiment, subjects were submitted to all stimuli; the analysis of free verbalisations could explain the perceptual dimensions and were helpful for identifying the contribution of noise and vibration stimuli to overall comfort.Keywords: sound and vibration perception, perceptual space, in-car comfort, vehicle noise, vehicle vibration, vibro-acoustic comfort, diesel ...
In automobiles, the perceived acoustical comfort is dependent on the vibro-acoustic exposure. To meet the customers' demands, acoustic engineers are asked for the optimisation of the vehicle's noise and vibration at early stages of the development. ...
The sound quality of vehicle interior noise has become a very important task for the acoustic engineers since more than 20 years. As vehicles become more and more quiet, the customer's sensitiveness for the acoustical comfort increases. ...