I’m trying to remove frequencies between 4750Hz and 8700 Hz for an experiment having to do with Tinnitus, see http://bit.ly/7c8IuR I used Effect:Notch Filter with Default choice set to 0, Notch Frequency at 5800 and Notch Q set to .9 It appears that the music has change but I can’t tell how or what was done. It says lower Q gives a wider notch, but I can’t tell how wide. There’s not suppose to be any difference in the hearing of the music, which was my experience. I used Effect:Vocal Remover for Center-Panned Vocals which gave me the choice of frequencies which I could remove, which was great, but again there was no way for me to tell if I had done anything to change the music. I’m essentially trying to remove one octave total above and below 5800 Hz which is the frequency that I believe I’m getting in my ear. Any help in verifying which method is better than the other or how to verify what I’ve done would be appreciated.