Hello Without being too technical the voice in the stereo is divided in two on each band the right and the left...imagine two bands one on the other..and the voice cut in two in the middle. The principle to eliminate it is to turn over the bands to have a half of the voice this time on the peak of each band. With a utility we plane the peaks of each band and so the voice is eliminated. Here is the result ...........https://we.tl/t-wyN36fnZke the audio comes from a clip Youtube ..rapatrier with Download surgeon ..and the clipping operation made by this site ...https://vocalremover.org/fr/ have fun ...