Need a digital audio expert.

  • Thread starter Thread starter Steenamaroo
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Steenamaroo

Steenamaroo

...
Ok, so......
I'm working on a session and during tidyup I accidentally delete the vocal track in it's entirety.
I'm currently working at data recovery but forget that for now.

Now, it's not the end of the world; I can have the chap re-sing it, but I'm thinking smart and realise that I have a recent stereo bounce with vocals and a session save point from exact that moment which is now missing vocals.
The bounce region is still selected in the session and everything!

So I rebounce the stereo wav but this time without vocals.
Line up the two wavs in a daw, flip polarity of one and BAM..I've got my vocals back, right?

Well...All acoustically recorded instruments cancelled out as expected and left nothing but vocals, but virtual instruments that come in later don't cancel!?

I can't get my head around this at all.

The virtual instruments appear to be out of time by about 9ms in the vocal-less bounce and even if I manually compensate, they still don't null. It's like they're just slightly different somehow.
I can completely rule out changes to the session. Even the file properties show date created and date modified as being identical.

I'm using ProTools 10.

I know everything is lined up perfectly and the volumes are perfect etc.
Any thoughts, chaps?
 
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Sorry I can't think of anything right off but I'm subscribing' to see what comes of his.
 
I posted up on AVID DUC too.


Just found out that acoustic instruments always null but the VI's cancel to varying degrees depending on how I set the buffer size!?
Comparing 256ms to 1024ms buffer sizes, the VIs are delayed by up to 10ms in the latter. :facepalm:

Going for a wee bounce/compare spree here.
 
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Well I got an answer from DUC.

It seems if I bounce audio from a VI twice they just won't null.
I don't fully understand why but there's some random element here.

If I had 'printed' my VIs to an audio track before all this happened then they would have nulled, of course.
 
That was close to what I was thinking- like the random elements of some verbs?
 
I guess so.
I'll go and update the "why computers are shite and standalone recorders are the be-all" thread. ;)
 
I read the post, not 100% sure if I understand the question, if I do then here is the answer. Even if you delete (I am assuming Windows, but IOS should have the same), you really don't delete you tell the system it can be reused. So, you could go find a program to recover deleted files assuming it hasn't been written over. That is why for security reasons, most people use a program the writes multiple times to a hard drive so the data cannot be recovered.

You might want to look for a utility for this, most should be free.
 
Thanks for the info, DM.

I had gone through the data recovery programs though. I recovered about 50 wav files from recent history but each and everyone one of them was completely garbled for whatever reason.

Not to worry.
TBH I was more interesting in understand why two bounces wouldn't null. Stupid computers. :p
 
Steenamaroo said:
Thanks for the info, DM.

I had gone through the data recovery programs though. I recovered about 50 wav files from recent history but each and everyone one of them was completely garbled for whatever reason.

Not to worry.
TBH I was more interesting in understand why two bounces wouldn't null. Stupid computers. :p
Click to expand...



Stupid computers:guitar:

Not a word about a stupid user :D
 
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