andreashahn
New Head-Fier
- Joined
- Aug 5, 2012
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By mixing an audio signal with ultrasound, you can hear the audio as if it's inside your head... even if the 'headphones' are nowhere near your ears. This even works if the "audio" signal is itself ultrasound, thanks to the principle of heterodyning.
The device is called a Flanagan Neurophone, and I posted the whole writeup here:
http://www.instructables.com/id/Build-a-Simple-DIY-Flanagan-Neurophone/
http://neurophone.wordpress.com
Enjoy!
