I listened to the CD that came with the SleepPhones and tried to figure out why there is a humming in the background. Is it suppose to be there or do I need to turn the volume down?
The humming is actually the binaural beats. Try to ignore it. We made them as soft as possible but still audible so that they would work. If you listen to them very closely, however, they are very fast beats in the beginning and towards the end of the sleep tracks, they are much slower. If you can’t hear the humming at all, then you may not be getting the full effect of the binaural beats. Studies have shown that they can still work at 1% of the total volume, but in our experience, it seems to work slightly better when louder than that. Ideally, they should be barely audible when you concentrate on them.
