Phase reverseal after tracking

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Ienjoymusic879

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Hi everyone,
I forgot to reverse the phase on my kick and my bottom snare mic and i was wondering if there is a way to reverse the phase in Pro tools LE. The only thing i thought of is inverting the track, is that the same thing as phase reverse? Thanks a bunch and sorry if someone alredy has asked this question 10000 times
LC
 
There must be. The multitrack progs I'm familiar with have a phase reverse option for each track. Sorry, I don't know how to do it for Pro Tools, but don't fret! Someone will be here soon to tell you how.
 
I thought that was the most HILLARIOUS shit I ever saw when someone was trying to force me to use protools

the "industry standard software" doesnt even have a phase switch LOL!!!!!!

The PT operator asked me why the hell I would ever need one! WOOT!!!!

Anyhow, you have to use a plugin to do it...
 
Ienjoymusic879 said:
Hi everyone,
I forgot to reverse the phase on my kick and my bottom snare mic and i was wondering if there is a way to reverse the phase in Pro tools LE. The only thing i thought of is inverting the track, is that the same thing as phase reverse?
Click to expand...

Yep - The same technique works for recording using a figure 8 pattern mic.
Make a copy of the audio track, invert it (either destructively or via a plugin), and you can then start panning the two tracks to give you stereo spread.

Dags
 
thanks for the help everyone im gunna check out some reverse phase plugins, im new to pro tools but im actully enjoying it!
thx LC
 
Maybe you missed it - Inverting IS reversing the phase. You don't need a plugin.
 
Massive Master said:
Maybe you missed it - Inverting IS reversing the phase. You don't need a plugin.
Click to expand...

But, it would appear that you have to do a "destructive" edit? Not cool.
 
Ford Van said:
But, it would appear that you have to do a "destructive" edit? Not cool.
Click to expand...

it's not destructive. Pro Tools creates a new file and will label it something like "Guitar01_Invert.aiff"

besides, is inverting really destroying anything? Nothing frequency or amplitude wise is being changed. Everything is just being flipped around.


check to see if you even need to invert. Unless something is 180 degree out of phase, I wouldn't really bother too much. You can just as easily nudge the track until the wave forms line up.
 
In addition to inverting phase (as has already been stated multiple times), a great number of plug-ins (especially EQs, including the free Digi EQs) have a phase-reverse switch built into them, so you can listen on the fly.

If I simply want to check phase on a track I'll use the Trim plug-in included with PT, which is basically just a level trim knob and a phase-reverse button.
 
Ford Van said:
I wouldn't trust ANYTHING where PT renders a new track! ;)
Click to expand...

it doesn't render a new track....it creates a new FILE. nothing in Pro Tools is destructive unless you have destructive recording on or tell AudioSuite to replace the file.

Pro Tools LE process audio at 32 bit float...so i really can't see why a simple inverting phase is going to destroy audio quality. If someone wants, I can do a before and after test of 100 inverts done to a file via AudioSuite
 
bennychico11 said:
it doesn't render a new track....it creates a new FILE. nothing in Pro Tools is destructive unless you have destructive recording on or tell AudioSuite to replace the file.

Pro Tools LE process audio at 32 bit float...so i really can't see why a simple inverting phase is going to destroy audio quality. If someone wants, I can do a before and after test of 100 inverts done to a file via AudioSuite
Click to expand...

Well, the +/- sides of a float, much like an integer, AFAIK, differ in the number of values they can represent by 1. So depending on how the math is done, there could either be a very, very slight risk of clipping or a very, very slight change in the resolution bit-depth-wise. Nothing any human could hear, though (and probably not enough to even result in a change of 1 when converted back to integer representation for output). :D

Just being pedantic....
 
Render, create. We are talking about the same thing.

It had to do SOMETHING to invert the phase. As I am very much suspicious of all things PT, I wouldn't trust that the new track doesn't sound "odd".

I will bow out of this one now. I am not a PT fan at all, and have some significant beefs about that app, and how it mangles audio in unexpected ways.

;)
 
You are welcome to your articles written by digidesign. I will trust what my ears hear.
 
It's just polarity inversion! Protools isn't going to 'mangle' your audio by flipping the polarity. Almost every outboard pre has a polarity invert button. It's not a difficult process to accomplish.

Ienjoymusic879: Don't listen to all this crap. Go ahead and use the polarity invert function in PT. The sonic gains (i.e. not having massive amounts of phase cancellation) will far outweigh some hypothetical conversion or quantization problem (which I seriously doubt would occur).
 
alright, we can settle this one.

Follow this link: http://www.soundclick.com/bennychico11
There you will find 3 files labeled 1,2,3 InvertTest.
They're all the same length. Two of them are not processed at all. Only one of them has been inverted 100 times over and over.

Technically that should be enough times for you to hear "mangled" audio by Pro Tools' 48bit processing environment...correct? Correct.

Let's find out what you hear.
:)
 
The greatest test would be to make a copy of the file, invert the copy and play them at the same time. If they cancel completely it was not destructive. Anyway, what makes you think that the phase switch on the trim plug is any better at inverting the phase than the offline process?
 
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