|
Very important - Need an obscure sound program to do something vital...
|
View this Thread in Original format
| THE_Chris |
Ok. So I'm not even sure where to start on this one. I need some help from serious Audiophiles.
So heres the story. I have a liveset at home,. It was recorded without any crowd noise, so it has all the tracks in very high digital quality.
Now, on this liveset is a very rare, unreleased track - Track B shall we say. The bulk of the song is perfect, except for the start and the end which are mixed out of and into, say Track A and Track C respectively.
ie : I want to remove the beats and sounds of Track A from the start of Track B. Doing this is practically impossible usually, but I had an idea.
I can get my hands on an unmixed copy of Track A , so, I feel it would be possible to take the waveform for this track, set it to the right speed, and somehow subtract that waveform from the liveset mix, effectivly removing the beats of Track A , leaving me with a decent intro to Track B. I could do the same with the end of the track, or could at least reconstruct it from the intro.
So does anyone know of a program that can do this??? ie: that can take a waveform and subtract it from another waveform.
I'm not sure if this would actually work, but I wanna give it a shot anyway.
Any ideas on a program that could do this for me???
Thanks. :)
BTW - The reason I'm being obscure with track names.... well, its a major reconstruction. And I wanna keep it a secret in case I cant do it and people get angry with me. :) |
|
|
| brash |
| quote: | Originally posted by THE_Chris
I can get my hands on an unmixed copy of Track A , so, I feel it would be possible to take the waveform for this track, set it to the right speed, and somehow subtract that waveform from the liveset mix, effectivly removing the beats of Track A , leaving me with a decent intro to Track B. I could do the same with the end of the track, or could at least reconstruct it from the intro.
|
In theory this would be possible. In practice, you are likely going to find that Track A was mixed with Track B in a manner that involved fading, EQing, or other stuff. Also, even when Track A and Track B are playing at the same time, it still probably isn't going to be the same Track A waveform as the original copy. There will be small variation in pitch, cracks and pops at different places, etc. etc. etc.
I think the easiest (relatively) way of getting a "full" Track B would be to create your own intro and outro from samples within the part of the track that is clean. Sure would be a hell of a lot easier, IMHO, than trying what you suggest... :) |
|
|
| Michael Russo |
I think brash is right... but, if you must be stubborn, use peak/soundforge/wavelab/cooledit/etc.
Then open up your physics textbook to the sound chapter and discover what happens when you add waves together that are out of phase... |
|
|
| tranceman78 |
| Wow. All I can say is that is a very ambitious project. However, I think you'll find that it's going to be next to impossible to accomplish. |
|
|
| Pjotr G |
I also believe it cannot be done in practise.
In theory, if you'd take track A, invert it, and put it over the mixed part track A would disappear. However there are a couple of things that make it impossible to perform:
- you'd have to get the volume EXACTLY the same. With 16-bit sound there are somewhere in the range of 65 000 dynamic layers, so getting it spot on would prove difficult
- the recording of track A you have, would have to be absolutely identical to track A in the mix. If it's from vinyl on the mix, and you happen to have it on vinyl too or CD or something it's already not identical. And then there's the coloring of the mixer and possibly EQ....
- You'd have to get track A at the EXACT same pitch as track A in the mix. exact doesn't mean like it sounds like a good mix, it means it's sample accurate. Sample's represent a very tiny time period.
- The pasting of the inverted Track A would have to be sample accurate so that it matches the track A in the mix
Oh well all these combined, is more than enough not to even bother to try it. Go for the method of taking bits and parts of the clean part of "side B" and cutting and pasting your intro and outro together. |
|
|
|
|
