Need help! Wanting to build a Qigong-o-meter.

[freesun]

"An ordinary inexpensive electret microphone may be used as an infrasound microphone by installing it in an enclosure made from common plastic plumbing parts.[...]"

 

http://adsabs.harvard.edu/abs/2001AGUFM.S12C0625H

 

No detailed description on how to build one, but it may be a starting point.

 

Here is a another approach with a detailed desc.: http://users.nexet.net/hale/Infrasound.html

 

And a professional microphone ready to be purchased: http://www.optoacoustics.com/catalog.php?i...CFShUZwodrmSZGw

Edited November 25, 2007 by freesun