# Laser like sound waves

**URL:** <https://boards.straightdope.com/t/laser-like-sound-waves/291129>\
**Category:** Cecil's Columns/Staff Reports\
**Created:** [February 21, 2005, 5:11am UTC](https://boards.straightdope.com/t/laser-like-sound-waves/291129 "2005-02-21T05:11:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Zuyq4def](https://avatars.discourse-cdn.com/v4/letter/z/0ea827/32.png) [@Zuyq4def](https://boards.straightdope.com/u/Zuyq4def)\
**Post date:** [February 21, 2005, 5:11am UTC](https://boards.straightdope.com/t/laser-like-sound-waves/291129/1 "2005-02-21T05:11:05Z")

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In “Why isn’t there an audio equivalent of the laser?” ([http://www.straightdope.com/classics/a2\_114.html](http://www.straightdope.com/classics/a2_114.html) ), the technology mentioned on the following websites isn’t mentioned:  
[http://www.atcsd.com/tl\_hss.html](http://www.atcsd.com/tl_hss.html)  
[http://www.holosonics.com/technology.html](http://www.holosonics.com/technology.html)

Although these sound technologies undoubtly differ from lasers in important ways, I think they are worth a mention in response to the question “Why haven’t they found a way to concentrate sound waves…”