News for hackers. Stuff that matters.

A comment on Terrestrial Sonar.

Re:Terrestrial Sonar by bluusteel on Monday April 13, 2015 @10:22PM (#9371730)
Reminds me of the "talking" drums used in West Africa[1]. Low frequency sound can travel distances measured in miles.

[1] https://en.wikipedia.org/wiki/Talking_drum

[ Parent | on HN ]

There are no comments on this comment yet.