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Reducing Sound Levels Inside Car Cabins

"Some cars have much less interior noise than others. Large or luxury cars often go through more extensive testing and use higher-quality materials to reduce the sound level inside their cabin. You can use better insulation and thicker sheet metal to reduce the noise, and while you can't make a Dodge Neon drive as quietly as a Lexus or a Cadillac, there are ways you can reduce the sound level inside the cabin.

 

Instructions:

• Upgrade your factory under-hood insulation. While the under-hood insulation helps to prevent fire, it also plays a role in reducing engine noise entering the cabin. Make sure your replacement is proven to reduce engine noise and fireproof. While you're under the hood, you can also add an engine cover. Many modern vehicles already have engine covers, but older ones don't.

• Install carpet padding in between your carpet and the metal floorboard of your car. Most cars have carpet padding, but it is designed to be more cost-effective and less effective at reducing interior sound levels. A large portion of road noise travels into your cabin from underneath the vehicle; upgrading to a thicker, more efficient carpet padding will reduce the interior sound level. Although the procedure can be done at home, the seating and carpet must be removed, so professional installation is recommended.

• Apply a sound-deadening material, such as Dynamat, between the metal and plastic in your door panel. The material will better insulate your cabin and drastically reduce noises from being piped in. Installation is fairly straightforward; most of the materials are self-adhesive. Removing your door panel is required. Many sound shops will take on the project if you aren't able to do it yourself.

Any of the methods will help reduce the sound levels in your car; doing all of them together would make a tremendous difference. Because most interior cabin noise comes from outside the vehicle, you can also look for ways to reduce the amount of exterior noise your vehicle makes to lessen the amount coming in. Try an all-season or touring tire for a quieter ride than performance tires. Exhaust systems can also be upgraded to operate quieter."

Article source: www.ehow.com,  written by Leonardo Navorski. All rights reserved to specified author and webpage.

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Why Sound Insulation is Important in Cinemas

"Sound insulation material in movie theaters and cinemas prevents outside ambient noise from permeating the theater and prevents noise from the movie being transferred to the outside environment. Cinemas and movie theaters are most successful when providing a good movie-going experience. The movie-going experience is enhanced when good sound insulating material is used along with comfortable seating at the proper angle and orientation to the screen.

Significance

Keeping outside noise from cars, people talking or other ambient noises is critical to a good movie experience and the success of the theater. Movies often change volume quickly and without warning; movie-goers can miss a whispered conversation between two characters if there is outside noise. Sound insulation is an important part of theater construction and makes up a large portion of the construction costs.

Effects

Sound insulation is a foam or padded material that is designed to reduce or stop noise transference. Sound is the vibration of air particles, and what we hear is how our brains interpret that vibration. Sound travels through the air in waves and is transferred through walls or other materials by vibrating their molecules and the air molecules around the materials. Sound insulation prevents air particles from vibrating past the insulating material, thereby stopping the noise transference.

 

Benefits

Sound insulation not only prevents sound from entering the theater, it also prevents or reduces sound from escaping the theater. Sound insulation prevents noise pollution escaping from the theater to the outside environment. Reduction in noise pollution is beneficial to any commercial or residential area and enhances the value of the property.

Size

Sound insulation size depends on two factors: the size of the space being insulated and the decibel level to be insulated against. Higher decibel levels of sound will require thicker insulation material and require more space.

History

Sound insulation has been common since the 1970s, when the first noise barriers were erected along U.S. highways. As residential areas began to expand, residential areas grew closer to state and federal highways. Noise barriers reduced the amount of traffic noise from major U.S. highways and improved living conditions in the areas surrounding them. One of the earliest noise barriers was constructed outside of Arlington cemetery. Since then, noise barriers and soundproofing has become commonplace, even in the home theater."

Article source: www.ehow.com,written by Keith C. . All rights reserved to the specified author and webpage.