Erase spare voice from sound file

I Have wav, mp3 file which contain original track and my voice at the foreground, my voice sound thicker, I tried to reduce or clear it via the softwares:
adobe audition , goldwave and wavepad but didn’t succeeded

The original record was made out of analog mini tape and the problem occurred while trying to record from analog tape to digital one via wrong cable that made my voice be added at the foreground

The damage doesn’t seem so bad so it can be removed

I add few pictures of spectral analysis ; I have mathematical knowledge on signal processing
please help:D

I’m sure the SW you’re now using has a vocal removal feature…
Try this method,see if it helps…