Golden oldies - Sound mirrors

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Sound mirrors

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Category: Other Chat
Forum Name: Golden oldies
Forum Description: Post all historic interesting items, stories and photos here (no, not your Nan)
URL: https://forum.speakerplans.com/forum_posts.asp?TID=52962
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Topic: Sound mirrors

Posted By: service dept Steve
Subject: Sound mirrors
Date Posted: 02 June 2011 at 8:57am

Anyone who says they know about acoustics should have a look at this tech.

http://www.spiegel.de/international/zeitgeist/0,1518,765771,00.html" rel="nofollow - http://www.spiegel.de/international/zeitgeist/0,1518,765771,00.html

Replies:

Posted By: Nachural
Date Posted: 02 June 2011 at 11:50am

Saw a documentary recently about these. They set up a B&K mic in front of them to measure the gain they provided and flew a WWII plane towards it. Detected engine noise at 22Km.

Check out this, the Meyer sound beam –

http://www.meyersound.com/products/industrialseries/sb-1/

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it's all just cardboard and magnets really