This is just plain weird! Can anyone explain!?!?

blink3times wrote on 5/19/2009, 6:28 AM
After applying compressor as a non real time effect (or any other non real time effect for that matter) to a mono track... it comes out as a STEREO track.


This is before applying the non real time effect to the LFE track. In this case it was Compressor


This is the LFE track after the non real time effect has been completed and peaks redrawn. It is now a stereo track?!?! This happens with any non real time effect I add to a mono track

Explanations? Am I doing something wrong?

Comments

TheHappyFriar wrote on 5/19/2009, 7:21 AM
Is this a sound file that's set to mono or a sound file that really IS mono with only 1 channel.

Either way, I'm not really sure it matters as, by default, a mono in vegas is the same as a duplicate left+right, not a left only. It wouldn't matter if it really is a mono track (duel mono is treated the same as a single mono file, the pans work the same, etc). It would if you had a multi-channel file that use only used one channel of it & when it ran the FX it modified all channels & used them all vs the one you had selected.

In Vegas 8 (looks like you're using the anti-bright light edition. ;) ) I took a file that had two completely DIFFERENT left/right channels. I set it up to use the left channel only. Applied a non-RT FX. Rendered it (applied). The resulting file used only the single channel I had selected as duel mono vs single mono.

So, to sum it up, looks like it's working as should.
Thomas H wrote on 5/19/2009, 7:51 AM
You are sending a mono signal with/through a stereo effect which in turn is processed and sent to a stereo output bus.
Makes perfect sense to me. If you absolutely want a mono signal you might try to hard pan the original channel before the FX and see what happens after processing.
You might also check if you have stereo/mono options at your FX plug in.
Tom H
blink3times wrote on 5/19/2009, 7:58 AM
Hey happy... how's your day so far?

I've screwed up my project, stuck my trailer hitch through the back window of my van.... and it's only 9:45 in the morning so I have the rest of the day to break things!

Actually it's a LFE track DIRECTLY from the SR11 cam so it is definitely a mono track from start to finish. But the same happens with the Center track which is true mono as well. If it was originally stereo track I wouldn't be too concerned. But it's not so it's basically INVENTING a channel out of no where.... which is NOT normal.

I'm not sure it matters either.... except with the volume. When I run this through AC3 pro it will add the left and right and the volume will end up slightly higher than I have it originally set. I won't bother to try and compensate... I'm just going to take this all over to Adobe Audition and do my mixing/filtering there and re-import to Vegas from there.
TheHappyFriar wrote on 5/19/2009, 9:01 AM
you're day's worse then mine. :) BUT... my lawn STILL isn't mowed after two weeks, the grass is almost 8 inches high because a) the cable to engage the deck was broken & then I found out (when I fixed that) the mower key was missing. Gah! But besides that it's actuatly not bad. :)

You're right that will be an issue when you render. If you render to mono, normally you have the option to decide if you want additive or a single channel, but with AC3 you don't. I'd say use the support option to suggest adding a feature that when you apply an FX to a mono audio event you get a mono audio event back out.
blink3times wrote on 5/19/2009, 10:28 AM
Yup... another bug.

Just went back to V8 and tried it... it works fine. I apply the non realtime effect and a box pops up and asks how to save. Choose mono, 48khz, 16 bit and it saves as such. A modified mone wav file takes the place of the original.

Do the same thing in V9 and it saves as stereo... regardless to how you set the "save file type".
blink3times wrote on 5/20/2009, 5:43 PM
From Sony:

"Hi George,