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Sound reflections: by limiting the reflection using many methods, e.g. by using acoustic absorption (deadening) materials, trapping the sound, opening a "window" to let sound out, etc. By analyzing the entire sequence of events, from the source to the observer, an acoustic engineer can provide many ways to quieten the machine.
In 1982 Sheller-Globe acquired the automotive business of Detroit-based Olsonite Corporation, a company which made steering wheels and injection-molded plastic parts and components. In 1984, Sheller-Globe acquired Northern Fibre Products Company, manufacturer of insulation and sound deadening materials and products for vehicle interiors.
Specific methods for improving NVH include the use of tuned mass dampers, subframes, balancing, modifying the stiffness or mass of structures, retuning exhausts and intakes, modifying the characteristics of elastomeric isolators, adding sound deadening or absorbing materials, and using active noise control. In some circumstances, substantial ...
This list of car audio manufacturers and brands comprises brand labels and manufacturers of both original equipment manufacturer (OEM) and after-market products generally related to in-car entertainment that already have articles within Wikipedia. While components sold by these companies have much in common with other audio applications or may ...
Active noise cancelling (ANC) is a software process that uses existing in-vehicle infotainment hardware to eliminate undesirable noise within the interior of a vehicle. This elimination technique is known as harmonic order reduction, where unwanted audio signals are identified by sensors and filtered out of the overall interior vehicle sound. [3]
The products marketed as safe were made with per- and polyfluoroalkyl substances (PFAS) chemical products, known as forever chemicals. They include brand names Teflon, Stainmaster and Scotchgard ...
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