jibs -
Excellent work!
A year ago, I made several MP3 files like this. Only used two tones, with +400 Hz and -400 Hz centered on my tinnitus frequency. I used the NCH Tone Generator, which isn't free. It really isn't that difficult. For six weeks I listened to a track for 2 hours a day, on some days I listened 4 hours! It did seem to change my tinnitus from a pure tone to a buzz.
I like the fact that you are using the actual methodology used by Acoustic CR. I was winging it, "Going where no man has gone before" - at least in my mind. I was also experimenting trying to simulate the Serenade track (which is so-much hyped). If a person dilengently follows your protocol, checking their tinnitus frequency, adjusting the track, they could save themselves a lot of money.
Once I went to an ATA discussion group and I mentioned what I was doing. Someone said that people have been listening to pure tones matching their tinnitus for years. In the old days they would listen to oscillator circuits they had built. I have also read that some TRT therapists use pure tones, rather than white noise, in their therapy.
A famous tinnitus researcher I've talked to explained how the Acoustic CR frequencies can suppress tinnitus. He said that by using frequencies that are above and below the tinnitus frequency, brain areas that surrond the overstimulated tinnitus brain area are stimulated. By stimulating these surronding areas, the tinnitus area of the brain is inhibited. It's called "neural inhibition". All neurons respond to and transmit synaptic voltages. By applying a voltage to the side of a neuron, the neuron calms down.