From: randyein (randyein_at_yahoo.ca)
Date: 2002-01-24 00:59:40
--- if you want to hear sound in the auditory part of your brain all you half to do is send a signal in your freqeuncey modulation in theta band in which would between 0-4.0 hz for instants mine frequencey is 3.1 hz. i can hear sound and also can record at that frequencey when i am talking out loud. so when i play it back i can hear evrything i have said. if you increase the db on the playback it will become easier to hear also you can record a freqeuncey in delta band as well and play back in your auditory part of your brain and hear sounds as well. In buildcheapeeg_at_yahoogroups.com, Jim Peters <jim_at_uazu.net> wrote: > Jim Meissner wrote: > > Jim Peters ( on this group ) is at this time working on the idea you > > presented about frequency shifting. He is very excited about it. > > If he is successful, that method only solves the simplest of > > problems. > > No, no, what I'm working on is for audio feedback, to let you listen > to brain-wave data that you already have in the computer. I'm > assuming that the data will come in over the serial port. > > I gave up on the idea of using soundcard input after the discussions > with Andreas on the list. The problems are as follows: > > - Everyone would need a full duplex sound card if we're going to do > audio output at the same time (e.g. for feedback). > > - The electronics to do a pitch-shift (e.g. by amplitude modulation) > to drive this aren't trivial, but ask Andreas, because I know > nothing about electronics. > > - There are problems with isolation (as Jim pointed out) > > - We're stuck with two channels forever. > > Also, there would need to be some extra processing on the input side > (but this is not too hard). Some people complained about the increase > in the amount of data to store, but that is not a valid criticism > because after processing, you would end up with a 128Hz or 256Hz > stream of data just the same as with serial input. > > As it is, the hardware guys seem to be well ahead on the design of a > serial-based solution, so it seems much better to encourage this and > get something working than to waste energy on another approach. > > Jim > > -- > Jim Peters (_)/=\~/_(_) Uazú > (_) /=\ ~/_ (_) > jim@ (_) /=\ ~/_ (_) www. > uazu.net (_) ____ /=\ ____ ~/_ ____ (_) uazu.net
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