- published: 13 May 2014
- views: 38302
Roadway noise is the collective sound energy emanating from motor vehicles. It consists chiefly of road surface, tire, engine/transmission, aerodynamic, and braking elements. In developed and developing countries, roadway noise contributes a proportionately large share of the total societal noise pollution. In the U.S., it contributes more to environmental noise exposure than any other noise source.
Roadway noise began to be measured in a widespread manner in the 1960s, when computer modeling of this phenomenon was perfected. After passage of the National Environmental Policy Act and Noise Control Act, the demand for detailed analysis soared, and decision makers began to look to acoustical scientists for answers regarding the planning of new roadways and the design of noise mitigation.
Partial bans on motor vehicles from urban areas have been shown to have minimal impacts upon reducing sound levels (as would become clear from later modeling studies); for example, the partial ban in Gothenburg, Sweden resulted in minuscule reduction of sound levels.
The sound barrier or sonic barrier is a popular term for the sudden increase in aerodynamic drag and other effects experienced by an aircraft or other object when it approaches supersonic speed. When aircraft first began to be able to reach close to supersonic speed, these effects were seen as constituting a barrier making supersonic speed very difficult or impossible.
In dry air at 20 °C (68 °F), the sound barrier is reached when an object moves at a speed of 343 metres per second (about 767 mph, 1234 km/h or 1,125 ft/s). The term came into use in this sense during World War II, when a number of aircraft started to encounter the effects of compressibility, a number of unrelated aerodynamic effects that "struck" their aircraft, seemingly impeding further acceleration. By the 1950s, new aircraft designs routinely "broke" the sound barrier.
Some common whips such as the bullwhip or sparewhip are able to move faster than sound: the tip of the whip breaks the sound barrier and causes a sharp crack—literally a sonic boom.Firearms since the 19th century have generally had a supersonic muzzle velocity.
Relaxing road highway traffic sounds help sleep issues. Relaxing calming sound of distant highway roads of passing traffic. Ambient silent noise relaxes your mind and body whilst you sleep. Help for study and concentration and focus.
Dynamat Noise Dampening Solutions: http://www.crutchfield.com/i-rytvc07Q/brands/Dynamat In our final installment in the Car Stereo Proving Ground series we examine the effects of Dynamat on sound quality. We have better-than-expected results. The Dynamat greatly reduces noise which in turns makes our music sound more detailed and present. Read all about it in our article: http://www.crutchfield.com/i-rytvc300/learn/car-stereo-proving-ground-pt-4.html Free shipping. Expert advice. Lifetime Tech Support. Crutchfield. Visit us at http://www.crutchfield.com/i-rytvc07Q See more car audio videos on our channel: http://www.youtube.com/crutchfieldtv Facebook: http://facebook.com/crutchfield Twitter: http://twitter.com/crutchfield
HARMAN Quiets the Car by Minimizing Road Noise. With Road Noise Cancelation (RNC) technology, part of the HALOsonic suite of noise management solutions, HARMAN enhances the sound quality of car interiors.
In this video we demonstrate how Eastwood's X-Mat - Heat & Sound Barrier, keeps your ride cool and comfortable! LINK TO BUY XMAT LOW PROFILE/ ALL PURPOSE 12"x12": http://www.eastwood.com/xmat-sound-deadening-12-x12-inches-5-sq-ft.html?reltype=2&parent;_id=52002&utm;_source=youtube&utm;_medium=annotation&utm;_content=x-mat%20low%20profile%20all%20purpose%2012x12&utm;_campaign=2016-01-22 LINK TO BUY XMAT LOW PROFILE/ ALL PURPOSE 18"x32": http://www.eastwood.com/xmat-sound-deadening-18x32-inches-34-8-sq-ft.html?reltype=2&parent;_id=51870&utm;_source=youtube&utm;_medium=annotation&utm;_content=x-mat%20low%20profile%20all%20purpose%2018x31&utm;_campaign=2016-01-22 X-Mat Low-Profile / All-Purpose Heat and Sound Barrier provides the ultimate in acoustic and thermal protection for your muscle car, str...
We walk you through a quick way to eliminate road noise and see how and why apply sound deadener is the quickest, easiest way to reduce that problem. SoundSkins is a dual layer material that uses large single pieces so that you can retain factory seals. Enjoy
QuietRide.com shows you how Acoustishield Insulation kits provide auto insulation sound deadening to reduce road noise, heat, and vibration by applying it to insulate a 1988 Ford Econoline Van. Our Kits use a combination of Heatshield and Dynamat Extreme to provide unrivaled insulation. They are pre-cut and ready to install, with over 1300 different kits for vehicles ranging from 1927 going forward. Learn more at: www.quietride.com Facebook: https://www.facebook.com/QuietRide Our channel: https://www.youtube.com/user/QuietRideSolutions
Alcohol Cleaner http://amzn.to/2axSqZL Dynamat Extreme http://amzn.to/2abd9jh Closed Cell Type Padding Ensolite Like Material http://amzn.to/2al371S Frost King Foam Duct Tape http://amzn.to/2al3Q30 Rolling Wheel http://amzn.to/2aReNZ2 Rolling Wheel version 2 http://amzn.to/2anE9iX By installing this sound dampening or sound deadening material correctly you can make your Lemon a Lexus, your Beetle a Bentley. Road noise is not only annoying but has negative health implications. As the road noise breaks a certain decibel level you'll inadvertently be tapping your sympathetic nervous system and causing a chronic stress situation which will increase your blood pressure and in turn negatively affect the rest of your body. I'll show you how I tackled my vehicle. Whether you do it yourself o...
We show you the best way to reduce road noise in your truck. Applying sound deadening is quick, easy and cost effective. The best solution to that loud droning noise while driving!
In this live video aired on 7/12/16 we go over our Heat & Sound Barrier Coating. Whether you need to spray under your dashboard or on your floorpans, this is the perfect solution to deaden road noise and reduce heat! We also talk about X-Mat and a recent install done on a Nomad Wagon. Daily Deal Valid 7/12/16 Only. Buy Heat & Sound Barrier Coating Here: http://www.eastwood.com/heat-and-sound-barrier-coating-1-5-gallon-kit.html?utm_source=youtube&utm;_medium=annotation&utm;_content=Heat%20and%20sound%20live&utm;_campaign=2016-07-12 Buy X-Mat Here: http://www.eastwood.com/xmat-sound-deadening-18x32-inches-34-8-sq-ft.html?utm_source=youtube&utm;_medium=annotation&utm;_content=x%20mat%20live&utm;_campaign=2016-07-12 Sound and heat reduction in one easy to apply coating Tough 2 part catalyzed c...
Kal Tire's Tire Testing - Road Noise Road noise is important to a comfortable driving experience. https://www.KalTire.com/Tire-Testing
This video demonstrates the benefit of using Eastwood's Heat & Sound Barrier Coating when you need to keep your ride cool & quiet! LINK TO BUY: http://www.eastwood.com/heat-and-sound-barrier-coating-1-5-gallon-kit.html?utm_source=youtube&utm;_medium=annotation&utm;_content=heat%20sound%20barrier%20coating%20&utm;_campaign=2016-01-11 Heat and Sound Barrier Coating 1.5 Gallon Kit Item #15632ZP Sound and heat reduction in one easy to apply coating Tough 2 part catalyzed coating Kit covers 30 sq.ft. at 60mil Coating & activator included Deadens sound & blocks heat Rugged gray finish, or can be top coated Resists UV, chemicals & abrasion Inhibits corrosion on bare metal No primer needed Can be rolled on or sprayed Thermally stable to 600°F This 2 part catalyzed coating deadens sound up to 5 ...
As part of the ongoing I-290 study, the Illinois Department of Transportation is evaluating the potential installation of noise walls along the Eisenhower Expressway in conjunction with the planned roadway improvements. This video includes renderings of noise walls along the corridor and provides an approximate noise level comparison. Disclaimer: The noise level simulation is meant to provide a general representation of noise abatement with noise walls and is not exact. Audio levels may vary depending on the type of speaker used and the computer settings. There should be a readily perceptible reduction in the audio level between the “Existing” and the “With Noise Wall” audio clips.
KIA Sedona Road Noise Test with Uniroyal Tires at 70 MPH. Excessive KIA Sedona Road Noise with Uniroyal Tires http://mysedona.blogspot.com/
Highway Noise Barrier Design - Department of Transportation 2000 - Video VH-708 - AVA20862VNB1. John A. Volpe National Transportation Systems Center, Cambridge, MA. This report includes the issuances received during the specified period from the Commission (CLI), the Atomic Safety and Licensing Boards (LBP), the Administrative Law Judges (ALJ), the Directors' Decisions (DD), and the Decisions on Petitions for Rulemaking.
Highway sounds white noise, cars passing by on freeway sounds, traffic white noise for sleep 8 hours. Perfect white noise generator to fall asleep fast, relaxation and baby sleep. Let me know if it helped you in the comments! With the amazing support from you guys the channel is growing at a rapid pace! Please like, subscribe and share the videos to your friends and families if you enjoyed them. Let me know in the comments if you have any request or feedback. New videos released weekly! Click here to subscribe! http://www.youtube.com/subscription_center?add_user=8hoursof For the latest news. Follow me on: Facebook: https://www.facebook.com/8hoursof Twitter: https://twitter.com/8HoursOf Pinterest: http://www.pinterest.com/8hoursof/ - - - - - - - - - - - If you are wondering how to re...
Sleep Sounds - On The Road 1hr - For sleep / Relaxation/Meditation
For this project I selected a spot along a riverbed in San Diego County that had a trail leading a long way away from the road. As I walked further away from the road, the generator and air conditioning sounds from a water treatment plant nearby became louder and louder. For this reason I ended up taking this recording closer to the road than I originally intended, and therefore there is almost constant road noise in the background. Originally I was disappointed but surprisingly, I really like it. If you listen closely you can hear San Diego County's most populous non-human mammals, rabbits, as they move throughout the underbrush near where I left my recorder. I'd still like to go to a more secluded spot sometime and get even better sound with zero road noise and that is a goal for th...
A great documentary about the worlds most extreme & powerful trucks ever seen. A truck (United States, Canada, Australia, New Zealand, South Africa, called a lorry in the United Kingdom, Ireland, and Indian Subcontinent) is a motor vehicle designed to transport cargo. Trucks vary greatly in size, power, and configuration, with the smallest being mechanically similar to an automobile. Commercial trucks can be very large and powerful, and may be configured to mount specialized equipment, such as in the case of fire trucks and concrete mixers and suction excavators. Modern trucks are largely powered by diesel engines, although small to medium size trucks with gasoline engines exist in the US. In the European Union, vehicles with a gross combination mass of up to 3,500 kilograms (7,716 lb) a...
This is episode 11 of Radio Rothingham, the Internet's least professional podcast, now with improved sound quality. Radio Rothingham is a podcast-styled livestream session with your host and artist The Artrix and co-hosts Panboy, Xaverius and Astra. New episodes released every week, subscribe for good background noise.
more at: http://quickfound.net/links/military_news_and_links.html "EXPEDIENT METHODS FOR ROAD CONSTRUCTION IN SWAMPY AND SANDY GROUND. USE OF CORDUROY MATS, WIRE MESH AND STEEL LANDING MATS." US Army Training Film TF5-1193 Reupload of a previously uploaded film, in one piece instead of multiple parts, and with improved video & sound. Public domain film from the National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and equalization (the resulting sound, though not perfect, is far less noisy than the original). http://creativecommons.org/licenses/by-sa/3.0/ http://en.wikipedia.org/wiki/United_States_Army_Corps_of...
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