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Road noise need not disturb your backyard oasis. Trees make beautiful and effective sound barriers and can block the din of urban noise by three to five decibel.

Other recommended evergreens are the Eastern arborvitae and the cherry laurel. Both are dense, ornamental trees that feature broad spreading, noise-absorbing canopies between 25 and 35 feet wide. The fragrant cherry laurel typically reaches a mature height of 18 feet while the Eastern arborvitae can

Most loud sounds will dissipate over extended distances. ▫ Use structures (walls and berms) and vegetation (grass, shrubs and trees) to break sound lines. absorption. The closer the wall is to the sound source, the more the sound will be reduced. Often, a short wall close to the source will provide the same impact.

Trees and shrubs have been used for many years to reduce traffic noise from busy roads. Plants can also help to reduce background noise levels inside buildings by absorbing, diffracting or reflecting noise. Some plant species are more effective than others and the benefits are most pronounced in

How Trees Reduce Noise. Noise reduction is achieved by either deflection or absorption of the noise or a combination of the two (to be effective they should be as close as possible to the source of the noise). Most hardscape barriers on the other hand, work solely by deflecting sound (example 1 in above

For severe problems, special fences that have noise absorbing blankets installed on the inside of the slats aren't your most attractive option, but they do work and can be made If you are opting to use plants, a row of dense hedges is your best bet for blocking sound but if you can layer plants in front of that—all the better.

Fencing options serving as noise barriers to block road sounds often use thick tongue-and-groove boards, in order to form solid, impervious walls. the fence (as in my photo), in back of it, or both. Evergreen shrubs and evergreen trees are best, since they will aid in landscape noise reduction year-round.

Diagram illustrating effect of different types of barriers on noise reduction. Example 3 illustrates planting depth and placement for sound reduction. AV Tree Farm

Hedges perform best as noise barriers the closer they are to the source of the sound, not the property to be buffered. A row of shrubs near the noise source and backed by a belt of trees is one effective design, particularly if the plants are staggered in a closely packed triangular orientation rather than in straight lines. Trees

But what if you do have such a noise barrier but still can't relax in your backyard? Many experts do agree that trees have the potential to help reduce noise by up to 8 decibels. If you're like me, you may do anything for any amount of decibel reduction of traffic noise. The best strategy is to plant a row of tall

Sound Absorption. This method uses plants to entrap or absorb sound vibrations. It is the most commonly used, particularly for large scale applications. Sound is absorbed by all parts of the plant such as leaves, branches, twigs and wood. The rougher the bark the better it absorbs sound. Experts say the best species for this

absorption. These types of materials are specifically used for the surface course to reduce the level of noise resulting from the tire-roadway interaction. The Virginia Transportation Research Virginia to measure the effects of the evergreen trees in mitigating highway noise. To achieve the second objective, four types of

Alternatively, trees and shrubs may be used in conjunction with solid barriers to achieve the best of all scenarios. Sound is greatest nearest to the source and How Trees Reduce Noise. The reduction of sound by vegetation is commonly attributed to the processes of reflection, deflection and absorption. Foliage appears to

A supplementary study of various surfaces indicated that, from a noise-reduction standpoint, surfaces covered with trees were the best. Screening of urban residential Ground forms are frequently limiting, as when elevated highways are above the treetops so that there is relatively minor sound absorption from below. Also

You'd need a tree swath at least 50 feet deep to get good sound absorption. But because sound perception is highly subjective, sometimes our brains can be tricked. The field of "psycho-acoustics" is a recent area of study — though its effects have been observed for many centuries. Four hundred years ago, when European

You'll probably want to do a little research to pick the best species for your area, sunlight, and soil conditions, but in general, cottonwoods, poplar and aspen trees are especially good at noise reduction because their leaf-shapes produce a good, strong rustling sound. The Arbor Day Foundation also offers

There are a number of ways plants can reduce noise. One way is through sound absorption. Plant parts such as stems, leaves, branches, wood, etc. absorb sound. Rough bark and thick, fleshy leaves are particularly effective at absorbing sound with their dynamic surface area for absorbing sound.

Trees next to a road Many people choose to add a fence to a property is to increase privacy in a yard or to block street road noise. Depending on your property this may or may not completely work. If you are trying to block out road noise but your home sits on a hill above the road chances are good that you

Noise blocking plants are especially useful in urban areas where refracted noise from hard surfaces, such as buildings and pavement, are problematic. An advantage to using plants as noise blockers is that they absorb sounds best in the high frequencies that people find most annoying. Let's take a closer