Talk:Noise barrier

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"Most commonly a noise barrier consists of a masonry wall or earthwork"

Most commonly?? I have never seen a noise barrier made of masonry, and I've done a lot of driving all over the world. This isn't an accurate statement Klafubra 11:54, 13 March 2007 (UTC)[reply]

most of USA noise barriers are of masonry, and this is the country where by far most lineal miles of barrier hae been installed. Anlace 22:24, 16 March 2007 (UTC)[reply]

bird friendly noise screens

hello my english is quite poor, so I would be glad if someone with native tongue could work this issue into the article: transparent noise screens are a big problem for birds, causing high casualty. http://www.windowcollisions.info/e/good_solutions/noise_barriers_transparent_walls.html stripes as specified in the article is standard in some european countries cheers —The preceding unsigned comment was added by Kaeptn*haddock (talk • contribs) 16:12, 23 March 2007 (UTC).[reply]

References requested

Please provide a reference that shows where "Design of Noise Abatement Structures along Foothill Expressway" was published, then use the publication information in that reference for the article, or remove this reference. Off line resources are fine, as I cannot find any on-line resources, and I will verify the publication. Thank you. KP Botany 22:23, 21 April 2007 (UTC)[reply]

9 dB reduction is NOT equivalent to 80% reduction in noise

In "Theory of noise barrier design" section, the author states "a reduction of nine decibels is equivalent to elimination of about 80 percent of the unwanted sound." However, many sources, including Wikipedia article on "Decibel", describe twice-loudness as occuring at 10 dB. A noise reduction of less than one half (<10dB) will not eliminate 80% of unwanted sound. That is, unless the original sound source is already very quiet (unlike the road noise described in the article), or, unless the idea of "unwanted sound" is very different from mine.

Consider the other Wikipedia article on examples of sound pressure levels, expressed in dB.

Done Loudness is not the measured quantity. Corrected to 86% of sound power. LeadSongDog come howl! 19:32, 25 January 2017 (UTC)[reply]

Tree usage as noise barrier

Hi, I'm not a native English speaker so my english is not so good. tree is used often and great to block noise and it's not mentioned in this article, maybe someone can add that? thankyou — Preceding unsigned comment added by 182.253.150.130 (talk) 16:16, 20 January 2015 (UTC)[reply]

Natural landforms

List naturally occurring landforms that are noise barriers, maybe ridgelines, tops of mesas, calderas, etc. Jidanni (talk) 05:51, 5 March 2020 (UTC)[reply]