Please note that you have wording errors on your “Sound Therapy for tinnitus” page.

This is the paragraph, I put brackets arount it, “needs to ear one ear” see below.

In order to attain a higher performing mental state you need the left and right hemispheres of your brain to be “synchronized. In order to do this a special frequency of sound (needs to ear one ear) whilst a different frequency is played into the other ear.