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Here's my tutorial for DIY acapellas using Audition on a simple stereo mixed song. The described process can highly vary according to the source. Usually, it works quite better on well-separated stereo mixes they used to do in the sixties (Sometimes on some songs, it's even more simpler as you just need to isolate one channel, like Yellow Submarine by the Beatles). Other thing, the acapellas you obtain this way can't really be mixed over a quiet track (you'd better find a track that's gonna blow your speakers). Take for example my mashup The Hand that's No Fun compared to the No Fun acapella I made. So yes, there's hope. Now let's begin.
Open the track you want to extract the acapella from (I picked Everyday People by Sly & the Family Stone ; by the way, don't try to make an acapella out of it, the result is pretty poor although the pictures can't tell you that)
Click on "Center Channel Extraction" (the mouse cursor is right on the icon)
Of course, I saved my standard presets (acapella & instrumental), you can use it or get inspired by it or by the Acapella & Vocal Remove original presets.
In the Granularity & Resolution zone, push every parameter at its maximum (even if it's gonna take more time), FFT Size & Inlays. As I got inspired by original presets, I kept the discrimination parameters as such. The central channel can go to 48 dB however, my twisted mind made me stay at 36 dB.
You can also easily create an instrumental by removing the central channel, in fact it's cleaner than acapella extraction (check my boot You Know these Boots are Getting Smaller for a good example) and no treatment is required after that.
It's gonna take some time as you can see.
Now you obtain a "thinned down" sound, we got rid of quite a lot of stereo elements.
Except that we still have parasite background sounds, something left from the drums in general.
Select the biggest portion you can take from the background noise without vocals (the longer the better) and click on "Reduce Background Noise".
Put the FFT Size at its maximum (24000) as well as the number of "captions" (4000) and click on the "Capture the profile". Close the window, select the part where you want to reduce the noise (normally the all track except if it changes radically).
Click again on "Reduce Background Noise". REduce the noise by 12 dB (not more or you take risk to get important parasite distortions). Put the same values you see on the picture for the other parameters, they're well-tested. You can also read Audition Help Files to use other values or try to understand what you're doing. Click OK. Repeat this step if you need to clean another part of the sound.
After that, choose the channel where the acapella quality is noticeably better (here, the left side but they're pretty close in general, if you're not sure, choose the quieter channel of the two, the one where there were no drums)
Click F11 (Convert sample type), Mono, 100% into the channel you chose, and 0% in the other one. Click OK.
Now you can save your dirty pretty acapella and use it into a mashup or whatever you like (you can, before you do that, put it into Ableton Live to set the tempo constant).
Last edited by acapella on Sat Nov 15, 2014 2:24 pm, edited 1 time in total.
Reason: images restored
"Dont Call me Ni99er, Whitey!!" lol.. that cracked me up
Its Rap K.O., all ya others O.K.
Be great to see some more well written tutorials like this one for other DIY acapella methods.
Btw, you can achieve a better effect with this if you use some crappy phase cancellation to achieve a quietened or even fully cancelled out low->mid-range frequences and then use noise reduction. I'm gonna post a new thread about this actually.
"I'll be happy 'til the day I die, I smile each day and I don't ever cry. Feeling sad is such a waste of time, so just be happy...just try"
- Ham - Be Happy
So when's the right time to apply the phase cancellation BTW?
Love the tutorial and what's already in it dude
in general, when the extraction and the noise reduction's done, I try to enhance the medium frequencies (between 400/2000 Hz) to give back a bit of punch to the vocals. the vocals sometimes sound like someone's yelling next to your ear but this fits ok over a rock song or something loud .
but again, I repeat, it's often useless to try this on some tracks and insist:
so a well separated stereo mix can be very promising.
cool nice tutorial but CAN anybody be kind enough to guid me through it? i'm kinna confuse at the Noise Reduction part? did you have to select the drum part alone onli? or did you select the vocal then reduc the noise? sorry i'm kinna slow but i would apreciate alot if yah can help me out on that part.. thankss
everytime i follow the step the beat is alwaez there its never cancle and sometimes it left with beats and vocal onli but i cant subtract the beat.. anybody noe why?
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