How can I synthesize a music format to remove lyrics and still have it resemble the original?

An Application like Soundtrack Pro could do it (with some hard work) and preserve all of the original instrumentals. Not sure what the Windows equivalent would be - maybe Nero Wave Editor?

uhh hrrmmmm

http://en.wikipedia.org/wiki/D.I.Y._a_cappella

look at option 3

also; most singles' LP's have an instrumental version on it on the B-side.

One trick I've used, which sort-of works, is to use a butterfly filter (splits the sound into mono centre and stereo side channels), and then throw away the centre channel. Not perfect, but it works. Virtualdub has that filter in it (use advanced audio filtering).

Originally Posted by Torkell

One trick I've used, which sort-of works, is to use a butterfly filter (splits the sound into mono centre and stereo side channels), and then throw away the centre channel. Not perfect, but it works. Virtualdub has that filter in it (use advanced audio filtering).

"Kn0ck0ut can also extract 'centre-panned' material from a stereo track. On many early (<1970) stereo releases, and much more rarely on recordings made since then, the vocal is the only part placed in the centre of the stereo field. If (and only if) this is the case, kn0ck0ut's extract centre feature will return only the vocal as a mono audio stream."