"Peter Lowrie" <peterlowrie at consultant.com> wrote in message
news:7sNAb.11862$ws.1122205 at news02.tsnz.net...
> One day I hooked my sweep function generator to the sound card of my PC
> oscilloscope. With headphones on I tuned the SFG into the tinnitus noise
> and recorded each tone on the PC. There were about 7 different regions of
> tinnitus. Then I combined the tones using soudcard recording software and
> looped them on playback, though the oscilloscpoe. My Philips 'scope has a
> phase adjustment and an inverter. I adjusted the phase until the sound was
> as loud as possible and then I hit the 'invert' button on the
> 'scope...Guess what happened.
>> Complete silence!
How does inverting the scope display cancel the tinnitus? Do you mean
inverting the PC output.
As for the concept, it is **FAR** from new, but you are indeed lucky if
*Your* tinnitus is so stable it can be cancelled for more than a few
seconds/minutes with a fixed oscillator signal.
The next part of your discovery is to develop a bio feedback system that
tracks the head noises using some neural signal or other, and maintains a
constant anti-phase signal. When you have done that, you may be able to
develop something commercially saleable :-)