Recent content by Jan Koopmans

  1. Jan Koopmans

    Acoustic CR® Neuromodulation: Do It Yourself Guide

    Question? About tonal T. ACRN does not increase the volume of my T. What it does. Using ACRN my T. has dropped in 2 years from 8400 Hz to 2200 Hz at the moment. I find a low pitch sound much more bearable than the original high pitch sound. Question? Is it possible by using ACRN for a longer...