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It could be done in analog (maybe digitaly) Posted by Zane (from: 66.52.64.209) on August 11, 2002 at 06:36:52: In Reply to: FOR THE LAST TIME...IT'S IMPOSSIBLE!!!!! posted by Andy P on August 31, 2001 at 12:38:25: Ok, i think he means the track, not the channel, removing vocals has nothing to do with channel (unless the vox are panned far left of far right). but to "invert the track" would mean to ME to use a 4 pole notch filter (digitaly you can emulate any "slope" of filter you desire) around the Freq. range of the vocals. or possibly several notch filters aranged at intervals coinciding with the harmonics of the vocals (the human voice is far from a perfect sine wave). now that is how I would remove vocals, leaving only music (albeit slighty different due to the fact that no matter how carefully you arrange your filters, your going to cut out some content of a band). also, if you want to get really advanced, you could find a way of envelope controling your filters (this is all theory, i preach no step by step way for you. i'm just trying to say that it IS possible). Now, once you have a copy of the music, without vocals, all you have to do is take an original of opposite phase (that is, when one wave is in the upswing, the other is in the downswing), and electronicly (again, i'm not a programmer, i couldn't explain how to do this digitaly) combine the two, so that the each cancel eachother out, leaving only the differences. yes, this actually works, its been used for decades in a slighty simplifed for for guitar pickups. Now, what should be left is a vocal track, although, with all the filtering its been through, not the most true to original. i hope maybe someone understands this more than I do, and can utilize the wave theory behind it digitaly! Zane Follow Ups: It could be done in analog (and it is!) Zane 07:17:02 8/11/02 (0) Post a Followup Name: E-Mail: Subject: Comments: : Ok, i think he means the track, not the channel, removing vocals has nothing to do with channel (unless the vox are panned far left of far right). : but to "invert the track" would mean to ME to use a 4 pole notch filter (digitaly you can emulate any "slope" of filter you desire) around the Freq. range of the vocals. or possibly several notch filters aranged at intervals coinciding with the harmonics of the vocals (the human voice is far from a perfect sine wave). now that is how I would remove vocals, leaving only music (albeit slighty different due to the fact that no matter how carefully you arrange your filters, your going to cut out some content of a band). also, if you want to get really advanced, you could find a way of envelope controling your filters (this is all theory, i preach no step by step way for you. i'm just trying to say that it IS possible). : Now, once you have a copy of the music, without vocals, all you have to do is take an original of opposite phase (that is, when one wave is in the upswing, the other is in the downswing), and electronicly (again, i'm not a programmer, i couldn't explain how to do this digitaly) combine the two, so that the each cancel eachother out, leaving only the differences. yes, this actually works, its been used for decades in a slighty simplifed for for guitar pickups. : Now, what should be left is a vocal track, although, with all the filtering its been through, not the most true to original. : i hope maybe someone understands this more than I do, and can utilize the wave theory behind it digitaly! : Zane Click here to be notified by email when someone replies to your message [ Follow Ups ] [ Post Followup ] [ Music Software Discussion & Help Page ] [ FAQ ]

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