jawnail

i don't know about passing currents through someone's brain... ouch! but there is a theory about something called binauaral beats that is supposed to use combinations of audio frequencies to affect brain states. the research i've done about it seems to suggest that it isn't a very strong idea... but there isn't that much research about it... check out this brainwave generator... http://www.bwgen.com/

okay, i got it attached and here it is....

yes... it is an EMG that attaches to a person with electrodes... it then drives a speaker... when you flex the muscle that is sensored to it drives the tone up... it's pretty neat... as for the attachment i don't think that i had a supported format.... i changed the extension to .jpg... hopefully now it will be viewable

hey folks... here's this EMG circuit that I have built. It works fine. However, I need to add a volume control so that it can be used with headphones. Any ideas? I know that R5 controls gain and that R7 controls the pitch. I have included an image of the schematic. it is on reply #3... thanks jawnail