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seiferalmasy63
Location: United Kingdom
Posts: 18
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 Posted - Sun Jul 20, 2003 8:42 am |
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I have a peice of audio I want to remove the music from. I have the exact audio in the exact place (to the sample) and I am wondering if there's any way to tell the computer to remove the difference between the two audios (that would leave me with just the voice I want.
Thanks very much for any help
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Graeme
Member
Location: Spain
Posts: 4663
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| Posted - Sun Jul 20, 2003 12:00 pm |
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If you are saying you have two identical pieces of audio, one with a voice and music and the other with just the music, then invert the music only file and add it (mix paste, in CE terminology) to the other one.
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seiferalmasy63
Location: United Kingdom
Posts: 18
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| Posted - Sun Jul 20, 2003 4:14 pm |
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Sorry I wasn't very clear. Thanks very much that helps a lot.
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ozpeter
Location: Australia
Posts: 3200
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| Posted - Sun Jul 20, 2003 8:45 pm |
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And for wide ranging advice in this general area, see 'Vocal removal or Instrument removal' which might be relevant depending on exactly what your situation is.
- Ozpeter
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seiferalmasy63
Location: United Kingdom
Posts: 18
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| Posted - Mon Jul 21, 2003 7:50 am |
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I did what you said but all it did was mix the 2 togeather, it didn't subtract the difference fvrom each other.
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MusicConductor
Location: USA
Posts: 1524
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| Posted - Mon Jul 21, 2003 9:00 am |
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Edit/Mix Paste
enable the "invert" checkboxes
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Graeme
Member
Location: Spain
Posts: 4663
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| Posted - Mon Jul 21, 2003 11:00 am |
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| seiferalmasy63 wrote: | | I did what you said but all it did was mix the 2 togeather, it didn't subtract the difference fvrom each other. |
You didn't invert one of the files, did you? 
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seiferalmasy63
Location: United Kingdom
Posts: 18
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| Posted - Tue Jul 22, 2003 3:43 am |
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ok, yes I did invert the old wave. I've gone mix paste, now since I've already inverted it I don't need to invert it again do I? The options I get are insert, mix, replace, modulate. Which one should I choose?
Sorry I'm new to this I've never been very big on sound.
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Graeme
Member
Location: Spain
Posts: 4663
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| Posted - Tue Jul 22, 2003 3:57 am |
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Let's try again;
1 - Load the two files into CEP
2 - Use Effects | Invert on one file
3 - Now copy that file to the clipboard - Edit | Copy
4 - Use Window to switch to the other file
5 - Now Edit | Mix Paste - select Overlap (Mix) and hit OK.
That's it.
If you do this with two totally identical files (eg two copies of the same file) you should end up with a totally flat line so try it this way to check you're doing it correctly.
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seiferalmasy63
Location: United Kingdom
Posts: 18
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| Posted - Tue Jul 22, 2003 4:28 am |
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yup went totally blank, I'll try it again on the files.
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seiferalmasy63
Location: United Kingdom
Posts: 18
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| Posted - Tue Jul 22, 2003 4:32 am |
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I just did it and all they do is mix.
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Craig Jackman
Location: Canada
Posts: 909
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| Posted - Tue Jul 22, 2003 5:16 am |
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| seiferalmasy63 wrote: | | I just did it and all they do is mix. |
... then they aren't identical files ....
As you've already shown yourself, when you invert a file and mix over the identical file they completely cancel out leaving a flat line. If your files aren't identical they will mix the inverted and normal files leaving a missmash of canceled, mixed, and boosted audio.
If you THINK that your files are identical, try inverting one (you've already done that), and insert both files into multitrack. Move them around in relation to one another and see if you just hadn't lined them up correctly.
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Craig Jackman
Production Supervisor
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Ottawa, Ontario, Canada
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d_korman
Posts: 28
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| Posted - Tue Jul 22, 2003 5:26 am |
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just a thought - could one of the files already be inverted with respect to the other? try it *without* inverting either file jsut in case
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Graeme
Member
Location: Spain
Posts: 4663
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| Posted - Tue Jul 22, 2003 7:59 am |
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On the assumption these two files are identical (and it's beginning to sound as though they might not be - just because they sound alike is no real proof) then it could be a timing thing.
This is something I left out originally, mainly because familiarity breeds contempt and it seemed so obvious to me that I never thought to mention it.
These two files must start at exactly the same time - to the sample! Follow Craig's advice on how to check this.
Another point, if you get them to start at the same time but they don't finish at the same time, then they certainly are not identical and you might as well give up now!
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seiferalmasy63
Location: United Kingdom
Posts: 18
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| Posted - Tue Jul 22, 2003 1:07 pm |
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Ok well what basically happened is I was working on a peice of audio and I made a master copy (as far as I got) both sounds togeather. When I came back to my work someone had deleted the voice but I still had the music (the music starts exactly at the beginning of the file). I'll try the stuff thanks.
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seiferalmasy63
Location: United Kingdom
Posts: 18
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| Posted - Tue Jul 22, 2003 3:38 pm |
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Ok what I did, brought in the music file. Inverted it. Brought in the file with both voice and audio. Pased the music only on to the one with voice and music and all it did was mix them. There wasn't any subtraction what-so-ever. I'm really sorry I'm being a complete pain in the ass, I really apreciate the help.
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Graeme
Member
Location: Spain
Posts: 4663
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| Posted - Wed Jul 23, 2003 4:55 am |
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Tell you what, start with two known identical files. Take a file, any old file, and then make a copy of it - that's two exactly the same.
Now go through the process as outlined above. If you get a flat line at the end of it, then you're doing it right and your other files are not identical. If you don't get a flat line, then you are doing something wrong somewhere and you'll have to review each step very carefully.
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seiferalmasy63
Location: United Kingdom
Posts: 18
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| Posted - Wed Jul 23, 2003 9:36 am |
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Ok I just found out why it wasn't working, the orignal audio is distorted a bit and the audio mixed in with the voice isn't. I tried a totally different aproach, I tried removing the vocals then using the audio I got from that as the subtraction but it didn't work. Any ideas, I know you guys really hate this stuff so I really apreciate your help.
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Graeme
Member
Location: Spain
Posts: 4663
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| Posted - Wed Jul 23, 2003 10:49 am |
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| seiferalmasy63 wrote: | | .... the orignal audio is distorted a bit and the audio mixed in with the voice isn't. |
Ergo - these files are not identical, in the way you originally believed.
Sorry - all bets are off. Looks like you'll be re-recording.
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seiferalmasy63
Location: United Kingdom
Posts: 18
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| Posted - Wed Jul 23, 2003 10:56 am |
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alright well thanks for the help. Now I just gotta find the money.
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