DIY Acapella Help??

I know this post is kind of old, but I’m experiencing the issue as well. I believe it’s because theres no actual instrumental version anywhere on the internet. So factors like bitrate etc. play a huge role. But if you have it figured out by now let me know, I’d love to hear it!

Best thing you can do:

Beatmap both tracks in ACID. This should force both tracks into the same tempo and pitch. Make sure the instrumental has been inverted. You may have to play with the volume of one of the tracks, but you should get good results.

Also: Make sure you zoom in as far as you can, and you have to make sure the waveforms match up EXACTLY opposite each other. A bit too far either way and you won’t get the frequency cancellation. In ACID, I like to play with the start offset, to get the waveforms to line up. Ideally, you want something like this:

/\ /\
/ \/ \ Waveform 1

\ /\ / Waveform 2 (inverted instrumental)
\/ \/

The waveforms will be mirror images of each other. And they have to line up as exactly opposite each other as you can get!

I’m starting to think that many instrumentals are purposefully being minutely altered, to actively prevent the phase cancellation method of vocal extraction, because some artists are notoriously defensive of their vocals.

As a case in point I gave a radio DJ friend (of a large commercial station) a copy of the Cosmic Dawn remix-cum-mash of "UD Project – Summer Jam" and "Akon – Right Now". My friend got to interview Akon himself and decided that, at the end of the (fortunately off-air) interview, he would play the track to Akon to see what he thought of it. By all accounts Akon went completely ballistic and kept demanding to know where he had got it from! Even thoughthe track was, and still is, plastered all over the internet my friend didn’t rat me out!

Whatever you do, NEVER use a warp algorithm like Ableton. That will only distort,chop the original waveform and will not work at all.
I still have yet to find one successful phase inversion that was made from vinyl (analog) source material. I tried doing it with an exact USB recorded wav
from AMG’s "bitch betta have my money" 12" single. I beatmapped both instr and vocal in Sony Acid Pro 6 and lined them up exactly at the highest zoom in setting,
and only got minimal cancellation. Still lots of bleed through frequencies. I think the knockout plug in is the best bet if you can get them lined up perfectly,
but there still will be background noise and results may differ. So far the only successful phase inversion pellas I’ve heard were made from wave files extracted from cd singles, and the source material was digital, not analog (tape reels etc)
On another note, even if you do get your hands on super rare cd singles with apparent matching instr and vocal versions say pre 1999 there’s a good chance it’s still
analog sourced, some even copies of the vinyl masters, so you’re screwed.

thaks too

someone mae a vid

helppppppppppppppppppppp

Hey,
is there some one, that can make a studio or just acapella of this song for me?
Loreen – My Heart Is Refusing Me

thx!