- Apr 18, 2013
- 1,633
- Tinnitus Since
- 2003
- Cause of Tinnitus
- Flu, Noise-induced, Jaw trauma
It works on what they call the tonotopic mapping of the brain, different regions responding to different frequencies, so the model predicts that an octave below would not work - which has been proven experimentally by the placebo group (if they found it to work that would open up a larger treatment group so we can be fairly sure that it doesn't).I think so, measured by an audiologist at 14000 Hz.
But everything from 13000 to 16000 is hard to identify and easy to confuse. Might be a mix.
But the spread of the frequencies generated by the acrn page seems quite small to me. Curious at how it's calculated.
So for the placebo control method, they already knew for sure that treatment one octave below doesn't work.
The frequencies, as I understand, are calculated based on where they see them best working to be separate enough from the tinnitus frequency, but still be perceived as a different sound.
The reason you find the higher frequencies so hard to identify is the way that the frequencies work up there. An octave is a doubling of Hz, so 16,000Hz is roughly B9 on a keyboard (B9 is more like 15,800Hz). The note directly below, the B-flat9, is roughly 15,000Hz, the next note, A9, is roughly 14,000Hz. When you're at the limit of your hearing these are difficult to tell apart, if you played them lower down on a piano you would fare much better.
One way to help you pinpoint the pitch is to start at 7000Hz and move around until the frequency feels in perfect harmony with your tinnitus, f you match the octave below you can double the Hz to get your actual pitch. You'll probably need a little help with this so you don't match it to a different harmonic, maybe have a piano keyboard near to make sure it's the octave sound you're hearing.
Steve