lead vocal detection, removal and extraction (=?iso-8859-1?Q?Tobias_Wagenbla=DF?= )

Subject: lead vocal detection, removal and extraction
From:    =?iso-8859-1?Q?Tobias_Wagenbla=DF?=  <tobias.wagenblass(at)GMX.DE>
Date:    Tue, 13 Sep 2005 17:19:31 +0200

hi, 

i have to do a "karaoke algorithm" as my diploma thesis and i am currently
collecting information about this topic. so, it would be helpful if anyone
could help me finding informations on 

- detecting and extracting the lead vocals (in stereo signals)
- removing the lead vocals (from stereo signals)

and related stuff like source separation.

thanks so far,
tobias