how do they do that in this rap song after vocal remover?

[mercinater]

i've been trying to enrich my vocals in my raps, and I'm just a beginner at recording, but i tried the vocal remover on one of my favorite rap songs for inspiration, and after vocal removal, every part of their(artists of my favorite rap songs) verses are mostly gone except for the chorus/hook, and the parts where they stress a last word of a rhyme and like I can hear it clearly

since vocal remover is only for center panned, i'm guessing it's just not panned centerly, +it does sound like it's sound kind of background echo effect (but there's no echo, like it just comes from behind as the main vocals are heard) i've tried inverting and panning my dual background vocals left and right 100%, but it still doesn't have that effect, and when i vocal remove my own songs it doesn't work

PS: if you're confused and wanna listen yourself,download the song i'm talking about here:
http://www.4shared.com/file/83910262/12 ... d=6b8669a5

once you vocal remove this above song you'll see

[steve]

since vocal remover is only for center panned, i'm guessing it's just not panned centerly, +it does sound like it's sound kind of background echo effect (but there's no echo, like it just comes from behind as the main vocals are heard)

You're almost spot on with your analysis.
The vocal has a main part that is in the centre of the mix, and that's the part that you can remove.
There is also stereo digital delay on the vocal. This creates really short echoes to the left and to the right, but at slightly different times in left and right, which creates a kind of pseudo stereo effect and makes the voice sound wide and thick. That's the part that you can't get rid of (because the vocal remover can only remove the central mono part of the vocal). If you listen carefully to the song through headphones you will probably be able to hear that there is some sort of time difference between left and right on the vocal - it's particularly noticeable around 1 min 50 seconds.

The reason that it does not sound like an echo is because the delay is so short. A delayed repeat only becomes a distinct echo for delays of about 50 milliseconds or more. The reason that the remaining vocal after vocal removal sounds mono is because the vocal remover mixes the left and right channels (with one channel inverted) to produce a mono result. You may also notice that most of the low frequencies in the voice have been successfully removed - this is because the stereo delay has only been applied to mid and high frequencies. In fact, much of the bass disappears when you use the vocal remover on this track which reveals another little production trick of keeping bass frequencies (below about 200 Hz) mostly in mono in the centre (which helps give the bass a bit more punch and works better on mono equipment).

[mercinater]

ty, i guess i sorta understand now, but is there a way to reillistrate this effect in audacity?

[steve]

There are several delay effects that you can experiment with here: http://audacityteam.org/download/nyquistplugins
Most of them are likely to be too echoey, so you will need to reduce the delay time - somewhere around 0.04 seconds will probably be about right.
You can make a duplicate of your original track (Ctrl+D) and use the effect on one copy. You can also use different Equalizer settings on the two copies, and then mix them to taste.