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VOCAL EXTRACTION METHODS

Do it yourself acapellas or DIY refers to the procedure of manually separating a vocal-only portion of a music track from its instrumental counterpart; also known as vocal extraction. Lots of techniques, advice and help in here for creating that very special D.I.Y acapella.

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VOCAL EXTRACTION METHODS

Postby TiMG on Thu Feb 03, 2005 12:26 pm

heres an overview of the different methods used for extracting vocals...

1. THE PHASE CANCELLATION METHOD
Get an instrumental of a song, invert the phase (sometimes refered to as flipping), and mix it with the original.. If done right everything besides the vocal is cancelled out. You can do this in any sequencer like cubase or acid.. The instrumental must be excatly the same time/pitch however. and mp3s might not work if they are badly encoded. Zoom right in to see the 2 waveforms next to each other (look for kick drum hits) and line them up.

2. THE KNOCKOUT METHOD
using 'knock0ut' (http://www.freewebs.com/st3pan0va/) you can spectrally subtract one piece of audio from another. Start by extracting the centre mono of a track (soundforge or cooledit will do it with the pan/expand feature). then try and make an instrumental out of loops from the track and 'knock them out' of the vocal parts. This can work even if the instrumental isn't excatly the same as the song.

3. OTHER METHODS
Besides these methods you can try Cool edits (now audition) noise reduction feature, which is very powerful. Analyse a bit of instrumental and get a profile (6000 or 4096FFT is a good size).. reduce than from the whole song.
You can also try the soundhack spectral plugins and Voxengo's Transmodder to futher reduce spikey nosies like drums.. (don't ask me how .. its all trial and error).


You will NEVER make a totally perfect acapella with 2 and 3. You can however make something good enough to work in your mix.. USE YOUR EARS! LISTEN and learn and you might get somewhere

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Postby Crin on Fri Feb 04, 2005 12:10 am

Nice man, thanks. Never had a go at making my own acapella's really. But there's a fair few tunes i have in mind that aren't on this site.
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Postby DJ_Brady on Fri Feb 04, 2005 4:52 pm

Tim is inverting, flipping and reversing the same thing? Playing backwards?
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Postby juno on Fri Feb 04, 2005 7:37 pm

For the first method I think he only referred to flipping which is basically switching the full left and right channels so that you basically have the negative wave of the song. When you match up the original & the invert the instrumentals will cancel each other out. The vocals will remain since there is no negative vocal frequency on the instrumental to cancel them out.


Think about it like math: say the vocals are X and the instrumental surrounding them is 1

(X+1)

You need the opposite of the instrumental to cancel it out and leave the vocals. Negative one is the inverted instrumental - the opposite. Leaving you with just the vocal if done right.

(X + 1) - 1


I havent got it down yet but I know it works from some of the tries I've done. I would've never known about this stuff if it weren't for Tim though - cheers m8 8)
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Postby matthewgiblin on Sun Feb 06, 2005 5:24 pm

easy mate
that was helpful :)
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Postby Anonymous on Tue Feb 08, 2005 1:59 pm

This knockout this looks kinda sweet.
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Postby Anonymous on Sun Feb 13, 2005 5:35 pm

WOW! i need to try that out!!!
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diy acapella remastering method

Postby marcicano on Mon Feb 14, 2005 7:16 am

i have a hypothisis that might work by enhancing ur acapellas diy's. u will need a program called vocal imitation & recognition, it is suposed to imitate any ones voic, well once u have ur voice changed into there voice it will sound like the diy acapellas voice but more enhanced versoin, once u got that part done mix the two voices together and it should make ur diy acapellas sound alot better and not so robotic and echo'y, give it a try, download dub master, or vocal imitation & recognistion, what do u think about this, any comments,
ps i was thinking what if i matched a computer generated text to voice program that can sing or make words, from lyrics, change that voice into the imitated voice, mix them together matching words. then adding some chrior effect to it. so it will sound doubled.
this is very logical. i think eminem might have done this kind of method, because i can swear in one of 2pac's songs on loyal to the game u can hear 2pac and emenem mixed together, just that emenems voice is emitated to 2pac's voice in a way that u can hear only 2pac and can bearly tell that its 2pac. but who knows maby i am mistaken, i wonder how emenem does his method of getting acapellas. if u have any questions or comments please leave. o yea i do know how to make acapellas. with no instruments at all in it.

i was successfull with 2pac hail marry, sounds just like an og.
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Postby realwma on Thu Feb 17, 2005 9:42 pm

i need to try this, thanks for the info
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Re: diy acapella remastering method

Postby ytknows on Thu Feb 17, 2005 11:44 pm

marcicano wrote:i think eminem might have done this kind of method, because i can swear in one of 2pac's songs on loyal to the game u can hear 2pac and emenem mixed together, just that emenems voice is emitated to 2pac's voice in a way that u can hear only 2pac and can bearly tell that its 2pac. but who knows maby i am mistaken, i wonder how emenem does his method of getting acapellas.

The reason you hear Eminem behind 2Pac is because he stacked it to make it sound like he actually recorded the song with Pac. And Eminem used the best method for getting acapellas, being a rich and successful rapper/producer and having access to the master tapes.
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Postby marcicano on Sun Feb 20, 2005 7:28 am

i agree on that part, but have u heard the old versoins of the og songs, they are actually in worse condition, i dont think pac saved all his acapellas, for sertin songs. i think eminem did the diy method and some how enhanced the vocals, i cam up with this idea, it realy does make your pellas sound better, ill be up loading a remaster version of hail marry, that does even sound like the diy pella, it sounds dubed and u cant even tell that im singing with him, this method is just a way to bring out more of the pella. if u dont believe me, then thats not your way. o and bye the way i wasnt talking about eminem staking up on certin parts of the song, u can hear his voice through out the hole song, listen to 2pacs old fresh natural tracks and then listen to the new tracks, there is a difference. i aint talking about speeding up or slowing down, just realy listen and u will hear a eminem in the back round singing with pac, just cuz he is rich dont mean that there is gana be a master acapella for every song. im just telling u that. give it a try. and use your ears. for the question about where do i get the instrumental, u can get a vocal remover, and use that as a instru, or loop parts of the song. ;p
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Postby ytknows on Mon Feb 28, 2005 5:44 am

you think pac put in all that work recording so many songs and didn't make sure that acapellas would be around? I've heard him say it himself, he'd grab whatever decent beat the in-house production at Death Row had and just bust on it, all he said he needed was a beat.
Not saying I know any better than you do, but that's my opinion. And your thoughts on 2Pac-ilizing Em's voice lead me to believe you may not know as much as you say you do... but that's just my opinion. :)
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Postby marcicano on Mon Feb 28, 2005 6:14 am

say what ever u want bro, i know what i did, i dont need u to believe me, its just an idea that happend to work, for me, in my opinoin u dont know everything too. dont get mad but ur a noob, honestly u dont know the first thing about extracting acapella's diy. are u stupid or something, i said, havent u ever heard how shity diy acaplla's are, this is one of the best ways to bring out 2pac's lead vocal. u cant even tell that anyone is singing with 2pac, it is a diy pella remastering method, so when u try to bust out ur opinoin's on me use ur eyes and read carfully. like im realy gana imitate my voice in to 2pacs and sing it alone, if course u aint gana sound like 2pac cuz every voice is different, the imitation program gets ur voice close enough to match 2pacs voice, bringing out more quality to 2pacs voice, it depends on how well u can sing and imitate with the singer u are trying to remaster. note THIS IS A DIY PELLA REMASTER METHOD. do u think i would realy post somthign that isnt true, it dont work every time. 2pac did acapelllas so he can go to the next song, not to have people bootleg his stuff, it would be impossible to just stay in the studio and make shure every song went with the final instrumental. i agree on him singing to the beat, but not for futer remixes that would ruin the original song. but who knows i dont care, im out
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Postby ytknows on Mon Feb 28, 2005 7:20 am

You're the one getting angry, I was the one who presented my argument in a civilized manner.

And if I don't know the first thing about DIY acapellas, then ask site admin 'acapella' how many I've uploaded... and explain the kick-ass tutorial I'm gonna be posting as soon as I'm done with it.

You can't talk about an "imitation program" and not even know its name, if you're such an expert. And don't be so quick to call someone stupid, especially when they have all the material necessary to prove you DEAD WRONG.

Sorry you're having to be a dick about MY OPINION. Thanks.
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Postby ytknows on Mon Feb 28, 2005 7:22 am

hate to double-post, but I just uploaded one of my own DIY acapellas, The Luniz's "I Got 5 On It", a hip-hop classic. As soon as acapella adds it to the archive, download it and call me a noob. :)
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Postby acapella on Mon Feb 28, 2005 3:13 pm

ytknows wrote:hate to double-post, but I just uploaded one of my own DIY acapellas, The Luniz's "I Got 5 On It", a hip-hop classic. As soon as acapella adds it to the archive, download it and call me a noob. :)


Did you make it clear it was a DIY by naming the file to reflect this i.e .._(diy_acapella) ?
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Postby ytknows on Mon Feb 28, 2005 5:03 pm

that one may have already been named (I mixed it down weeks ago) so it may or may not have "diy" in the title, but it's such a crystal clear one that it doesn't really need that tag. The beat is gone entirely.
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Postby marcicano on Tue Mar 01, 2005 8:29 pm

ok
listen up. the program is called vocal imitation & recognition ltd. or dub master, u can download a demo trial. thank u very much noob. then u have to have a good enough diy acapella such as hail marry if u ever heard of that, or holla if you hear me(2pac),open it up in soundforge acid, the one where u can stack up on wave files, u might want to sing with the mix not over the mix about 2 or three times, also called doubleing, to bring better vocals frequenies to ur mix, it will take some time if u dont know the song so try a favorite song of urs, or learn the song piece bye piece. when recording u have to play the mix at the same time, u can adjust the recording volume in ur settings and select the recording module (ie. in help) before u start,) once u are done recording ur voice under the diy acapella u should have about 2 or 3 dubed vocals that are urs, and one diy acpella on top, the one on top should have a higher volume then ur vocals wich there volume should be some where in the middle. (ie) keep playing with the volume and listen for improvment. this method hides more of the back round noice and feels in the low volume vocal parts of ur diy acapella. ur gana want to render the file as a project, and save it in wave format, then ur gana want to save both versions seperated by turning down the volume of the vocal's, diy pella first to zero, then save it in wave, repeat this again doing the same with ur vocals, ( hint go to file then click undo to put back the original volume of one acpella) then run ur own vocals through the vocal imitation & recognition ltd. program, set the diy pella's gender, ( import the diy pella in the gender in the gender section, set gender. then imitate ur vocals into the diy pella, then compare results, u are gana have to use ur ears, even though it might not sound like ur singer, it does in some way, and use that vocal to match up with the acapella match up the one u renderd, deleating ur first own vocals, and replacing them with the imitated vocalse, once again us volume and listen, there u go, it should sound alot better, if not, what did u expect, magic, lol but for real, this method does work, if u have questions please ask. if u dont believe me dont comment, its a wast of cyberspace.
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Postby ytknows on Wed Mar 02, 2005 1:53 am

well, i searched and found that program. i had never heard of it (nor had any of my associates) and the name sounded really... what's the word... made-up, i guess. my bad.

you're still way off with the noob comment.
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Postby marcicano on Wed Mar 02, 2005 3:11 am

well usually noob's have low posts my bad too. it just got me when u said u dont think i know what im talking about, but for real it does work, u just have to use ur ears and brain like i said, give me ur email adress and i can send u both the samples i did the og diy pella and the remastered diy pella. but if not ill have to post my results on this page or some other page that will let me post samples. once again my bad.
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Postby eKOe on Wed Mar 02, 2005 9:06 pm

The noise reduction method works, i tried it for green days basket case, but could only get the opening verse extracted and it was extracted WELL but when the guitars come in, i cant get rid of those, and i want this pella bad, so if anyone can do this for me id be eternally greatful!
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Postby ytknows on Thu Mar 03, 2005 8:51 pm

hmm, Matt, I'll work on that one... never thought of trying that song.
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Postby williedynamite on Thu Mar 03, 2005 10:03 pm

okay mann
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Postby eKOe on Thu Mar 03, 2005 10:03 pm

ytknows wrote:hmm, Matt, I'll work on that one... never thought of trying that song.


Thanks dude, its not an easy one btw, its just everyone was doing rap pellas i thought id give you all a challenge

if you manage a decent extraction, upload it + tell me here
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Postby Anonymous on Sat Mar 05, 2005 12:30 pm

if you have NERO EXPRESS it has a karaoke filter, so you can make an instrumenta
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Postby TiMG on Sat Mar 05, 2005 12:33 pm

Matt2k wrote:The noise reduction method works, i tried it for green days basket case, but could only get the opening verse extracted and it was extracted WELL but when the guitars come in, i cant get rid of those, and i want this pella bad, so if anyone can do this for me id be eternally greatful!


you could try doing a centre extraction (pan/expand) and then looping the instrumetnal bit underneath the vocals and using knockout? might work
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Postby Anonymous on Sat Mar 05, 2005 11:33 pm

Good Looking on that info about Making your own acapellas . It will help me upload joints for your site
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Postby eKOe on Sun Mar 06, 2005 10:53 am

TiMG wrote:
Matt2k wrote:The noise reduction method works, i tried it for green days basket case, but could only get the opening verse extracted and it was extracted WELL but when the guitars come in, i cant get rid of those, and i want this pella bad, so if anyone can do this for me id be eternally greatful!


you could try doing a centre extraction (pan/expand) and then looping the instrumetnal bit underneath the vocals and using knockout? might work



Ill give that a go, might work never really got the hang of knockout though
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Postby marcicano on Tue Mar 08, 2005 1:48 am

so ur saying loop a instrumental loop that is inverted and mixed with the opisite channel then loop that matched up with the vocals versoin first, then do a noice profile reduction of bass and snares first then noise reduce it in the vocal verstion, then use the match up in nock out. and do u noice reduce piece by piece or do the whole instrumental.
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Postby marcicano on Tue Mar 08, 2005 1:51 am

o yea is it true if u play a inverted pan expaned song with like a cd player and record it with a seperate mic, can u get a acapella that way. just bye pulling out the head phone plug a little bit and ajust it right to hear more vocals. am i right. cuz i heard and found this out on my own experince on gybo.
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