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Old September 2nd, 2011, 06:11 AM   #1
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Changing volume of left and right audio channels

Is it possible to change the volume of left and right audio channels separately? I have recorded using two mics - one to each channel - but one is louder than the other and I want to even them up.
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Old September 2nd, 2011, 06:22 AM   #2
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Re: Changing volume of left and right audio channels

G'day Rinso :) Yep it's possible to do that and lock 'em so they don't change levels. You right click (on something) properties I think, and disable 'em. Set the new balance and lock 'em up again. I remember doing this with the master gain which wasn't balanced evenly.

Don't balance it by the meter though, balance it through listening on speakers, check on headphones and vice versa.

Cheers.
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Old September 2nd, 2011, 06:23 AM   #3
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Re: Changing volume of left and right audio channels

Hey Renton

There is a script called "Stereo Split" that will do the job but I do it manually. Ungroup the video and audio and then copy and paste the audio into a new audio track on the time line so you have two stereo audio tracks!!
On the first track, right click and select "Channel" and select "Left Channel Only" and then do the opposite with the second track and you will have right and left channels with complete control of either!!

Finally group the video and two audio tracks all together in case you need to edit or move them!!

Chris
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Old September 2nd, 2011, 07:07 AM   #4
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Re: Changing volume of left and right audio channels

Pro 10 gives you the option of bringing a stereo track in as two mono tracks.
Options - Preferences - General - Import stereo as dual mono
When this check box is selected, two-channel audio files will be opened as separate mono audio events on separate tracks.
The audio events are grouped, and tracks that are created by adding media will be panned hard left and hard right. You can select an event and choose Edit > Channels to choose which channel is used for that event.

The bold sentence above is the only thing I don't like about this particular option.
I have no idea what Sony was thinking when they did it this way.
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Old September 2nd, 2011, 07:33 AM   #5
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Re: Changing volume of left and right audio channels

Here's a zipped file of the script Chris was talking about.
Thanks to Edward Troxel for making it available.
Attached Files
File Type: zip StereoSplit.zip (610 Bytes, 75 views)
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Old September 2nd, 2011, 11:57 AM   #6
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Re: Changing volume of left and right audio channels

The Master levels slider in the Mixer window allows you to control L and R volume separately. Of course, this affects the entire project, but if you want to do it for all of your audio, it's an option.
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Old September 2nd, 2011, 05:03 PM   #7
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Re: Changing volume of left and right audio channels

Quote:
Originally Posted by Mike Kujbida View Post
Pro 10 gives you the option of bringing a stereo track in as two mono tracks.
Options - Preferences - General - Import stereo as dual mono
Thank you Mike, very useful.

/m
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Old September 3rd, 2011, 02:50 AM   #8
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Re: Changing volume of left and right audio channels

Quote:
Originally Posted by David Jimerson View Post
The Master levels slider in the Mixer window allows you to control L and R volume separately. Of course, this affects the entire project, but if you want to do it for all of your audio, it's an option.
David. Does this apply to VMS 10 HD platinum as well as Vegas pro
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Old September 3rd, 2011, 08:08 AM   #9
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Re: Changing volume of left and right audio channels

Yes, Roy, it does. VMS will also let you adjust the master volume channels separately. You *DO* have to "unlock" them, though, in either VMS or Vegas Pro. Just click on the little lock button below the master sliders.
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Old September 3rd, 2011, 03:08 PM   #10
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Re: Changing volume of left and right audio channels

Thanks for the help guys. Much appreciated. I'm heading off for a week (family holiday skiing on Mt Ruapahu - weather looks great for a few days!!) so won't be able to play around with this till I'm back - but it looks straightforward. Thanks again. Appreciated...
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Old September 3rd, 2011, 03:12 PM   #11
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Re: Changing volume of left and right audio channels

Quote:
Originally Posted by Mike Kujbida View Post
Here's a zipped file of the script Chris was talking about.
Thanks to Edward Troxel for making it available.
I got a Windows error message when I tried to open the file...'Syntax error' - I'm running Win 7...
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Old September 3rd, 2011, 05:49 PM   #12
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Re: Changing volume of left and right audio channels

Quote:
Originally Posted by Renton Maclachlan View Post
I got a Windows error message when I tried to open the file...'Syntax error' - I'm running Win 7...
Hmm. Not sure why that happened.
I'll post the text for it and hope that it keeps the formatting.
Copy everything below and save it as StereoSplit.js



/**
* This script will split a stereo track into two separate tracks.
*
* Written By: Edward Troxel
* Copyright 2005 - JETDV Scripts
* Modified: 10-17-2005
**/

import System;
import System.IO;
import System.Windows.Forms;
import Sony.Vegas;




try {
for(var track : Track in Vegas.Project.Tracks)
{
if (track.IsAudio() && track.Selected)
{
//Add a new audio track
var Rtrack = new AudioTrack(track.Index, "Audio-Right");
Vegas.Project.Tracks.Add(Rtrack);

for(var evnt : TrackEvent in track.Events)
{
//Copy all events to the Ltrack
var mynewEvent = evnt.Copy(Rtrack, evnt.Start);
//Set right to disable left
var audioEvent : AudioEvent = AudioEvent(mynewEvent);
audioEvent.Channels = ChannelRemapping.DisableLeft;
//Set left to disable right
audioEvent = AudioEvent(evnt);
audioEvent.Channels = ChannelRemapping.DisableRight;
}
break;
}
}

} catch (e) {
MessageBox.Show(e);
}
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Old September 3rd, 2011, 07:56 PM   #13
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Re: Changing volume of left and right audio channels

I saved it notepad, but it came up with the error message again when I double clicked it...
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Old September 3rd, 2011, 08:09 PM   #14
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Re: Changing volume of left and right audio channels

Why did you double click it?
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Old September 4th, 2011, 07:39 AM   #15
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Re: Changing volume of left and right audio channels

You don't double-click it. You open Vegas, go to Tools - Scripting - Run Script and then pick that file.
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