Ok, this is kind of a weird request, but I'm trying to extract the voice track from a Jpop CD, and I figured that this *should* be theoretically possible given the fact that I have both the original track (WAV) and the backing track (WAV).
I figured a simple subtract between the two WAV's should be all I need to do right? Wrong. Here's what I've discovered (using the following annotation - Released song - referred to as "Track 1", Backing track - referred to as "Track 2")
Track 1 starts about 0.40sec after Track 2, which isn't a problem, because all I needed to do is delete that 0.40 sec or so.
Track 2 however, seems to run just a *tad* bit faster - I think over the course of a four minute song, it's about 500 samples too fast...
So I'm sitting here experimenting with a linear interpolation filter (i *think* is right) attempting to increase the backing track to a point where it matches with the released track. I end up getting sections of the song to almost perfectly cancel out (example), but it's too much trial and error for me :\
Any suggestions on software?
-nyekobug
Vocal isolation software?
Started by nyekobug, Jun 14 2005 04:59 AM
5 replies to this topic
#1
Posted 14 June 2005 - 04:59 AM
1.95TB uploaded!!!! \^.^/ Unofficially in charge of the HM2000 reseed project. My favorites: infidelguy.com, Digitally Imported FM (my playlist), 2 the Ranting Gryphon and Opie and Anthony. Visit the 塊魂 (Katamari Damashii) message board too!
Server is offline pretty much indefinately for filesharing. Sakura beats my share ratio
Server is offline pretty much indefinately for filesharing. Sakura beats my share ratio
#2
Posted 14 June 2005 - 06:18 AM
wow i sure wish i had a link!
there is so much H!P i would love to do this with!
there is so much H!P i would love to do this with!
Mo ghrá thú, a Ai Kago
New signature coming probably never!
New signature coming probably never!
#3
Posted 15 June 2005 - 03:30 AM
Heh, in some cases it's a trivial matter of just inverting one waveform and aligning them together. For example, Sky subtracted nicely without any kind of need for fancy shmancy resampling. However, Mienai Tsubasa is a total pain to deal with - I had to resample it, and it still has weird instrument sound leakage :\
-nyekobug
-nyekobug
1.95TB uploaded!!!! \^.^/ Unofficially in charge of the HM2000 reseed project. My favorites: infidelguy.com, Digitally Imported FM (my playlist), 2 the Ranting Gryphon and Opie and Anthony. Visit the 塊魂 (Katamari Damashii) message board too!
Server is offline pretty much indefinately for filesharing. Sakura beats my share ratio
Server is offline pretty much indefinately for filesharing. Sakura beats my share ratio
#4
Posted 15 June 2005 - 05:51 AM
perhaps the instrumental is not the right version? (tho I don't know how that would be possible)
#5
Posted 15 June 2005 - 07:24 PM
heh i know goldwave can cancel out the vocals on a track pretty nicely. betcha it can capture it too. im not too experienced with that tho so you will have to try and get errors some more ;p
#6
Posted 15 June 2005 - 09:52 PM
perhaps the instrumental is not the right version? (tho I don't know how that would be possible)
Nope, the instrumental is the right version, it just runs about 0.003% faster (actually I started characterizing the delay based on drumbeats, and it fluctuates). It's amazing how a SINGLE sample difference can change the overall way the waveforms combine :\. This is why I do video compression, not audio ;D.
heh i know goldwave can cancel out the vocals on a track pretty nicely. betcha it can capture it too. im not too experienced with that tho so you will have to try and get errors some more ;p
Hm, I'll check it out later tonight, thanks for the tip hu5h. I bet I could use it to cancel the vocals out, and then subtract it out :]. I hope to keep all of the wonderful reverb and backing vocals at the same time, so I'll cross my fingers (and toes...and eyes...) and hopefully it'll work
-nyekobug
1.95TB uploaded!!!! \^.^/ Unofficially in charge of the HM2000 reseed project. My favorites: infidelguy.com, Digitally Imported FM (my playlist), 2 the Ranting Gryphon and Opie and Anthony. Visit the 塊魂 (Katamari Damashii) message board too!
Server is offline pretty much indefinately for filesharing. Sakura beats my share ratio
Server is offline pretty much indefinately for filesharing. Sakura beats my share ratio