parallel compression problem

carmine · Post by **carmine** » Tue Aug 07, 2007 8:45 am

Hey guys.
If this has already been covered, please point me in the direction of the post.
Been mixing and haven't had much time to look.....
I am having problems trying to do parallel compression with scope.
Here's the setup. Basically, route drum tracks, vocals...whatever,
to a group channel via aux bus. Next, route the group channel to a channel in the scope mixer. I am using STM2448 mixer. Everything fine up to this point. I want to use a compressor in this channel so I have two channels. One compressed, one not. However, as soon as I insert a compressor, I get a bunch of phasing. Like it's not delay compensated or something. Anyone else run into this, or is there a "more correct" way of approaching this.

Thanks again.
Carmine

Post by **garyb** » Tue Aug 07, 2007 10:42 am

it's not phase compensated. neither is real hardware. the stm2448 mixers have sample delays on each channel for this purpose. just delay the clean channel a few samples. there is also a free plugin called "phase fix" in the devices forum.....

carmine · Post by **carmine** » Tue Aug 07, 2007 2:27 pm

Hi Gary,
Thanks. I will try that when I have a chance.
You're right, real hardware isn't either, however, it doesn't generally
introduce the "phasing" artifacts. But, whatever works...

Take care.
Carmine

Post by **garyb** » Tue Aug 07, 2007 2:40 pm

if you "y" off after going in to scope, you should have much less latency issues. always do your monitoring in scope, not through the sequencer's mixer...

valis · Post by **valis** » Tue Aug 07, 2007 5:09 pm

Phasefix is the way to address this. If you do searches on the forums for that device name you'll get several threads that discuss why the phasing occurs and how to properly compensate for it by hand, which was also necessary in software programs until PDC was added as a standard to almost all of them.

carmine · Post by **carmine** » Tue Aug 07, 2007 6:44 pm

Thanks again guys.
I will look into this when I get a chance. Seems pretty simple actually.
Gary...by "monitoring is scope" I assume you mean Control Room out connected to Scope card outs...yes??? I bring the mix back through a console on two channels and then send it out back to the Scope card.
Until I get something like a Mackie Big Knob and then console go bye bye......

Thanks gents...
Carmine

Post by **garyb** » Tue Aug 07, 2007 9:38 pm

carmine,
no, by "monitoring in scope", i mean that you aren't lisrtening to your mixes through the sequencer. i mean that the sequencer feeds a scope mixer, as do all live inputs and that the signal you listen to goes through the scope mixer.....

carmine · Post by **carmine** » Wed Aug 08, 2007 6:41 am

Okay, that way too.

Yes, that's how I am monitoring.

Have a great day Gary and all
Carmine