HDX2 - running out of DSP resources - tips?

[arche3]

Why don't you delete some mixer sub paths and see what happens. Would take about 5 min. Delete. Look at dsp use.

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[LDS]

I haven't noticed anything specific to Atmos that makes voice and DSP usage different than other formats. It still adheres to the same rules of HDX systems. I generally find I uses voices much quicker in Atmos though, as I use quite a number of 7.1.2 aux channels with native stratus 3d instances on them for workflow reasons.

Using native plugins on 7.1.2 aux channels will chew up 10 voices at a time... Alternative native -> DSP -> Native on an Aux channel will munch up 20 voices. It can escalate pretty quickly.

Your mileage might vary, as I have only ever used HDX 1 with 64 channels of Dante via Atmos mastering suite. Anything bigger, and I just use Dolby Audio Bridge.

[smurfyou]

Originally Posted by JFreak

True, haven't done any Atmos work. But I do know something about PT mixer and that's where your problem is somewhere.

The problem is the number of resources taken up by so many 7.1.2 paths. It's not an issue with his setup.

I always thought subpaths did not use up any additional mixer since it's already using those channels internally anyway.

[nedd]

I have HDX2 and use DAPS. One thing that might help a bit is to use 7.1 paths instead of 7.1.2.
I am sure you are not using .2 in this paths and for Strauts 3D, Symphony 3D or Cinematic verbs you would anyway use additional object auxes for .2 (or .4, .6).

[kosmokrator]

The situation really sucks. You need HDX2 for the required IO, but then run into to DSP-induced voices and mixer-resources hell.

I really hope the hybrid mixing engine for HDX arrives soon and works as advertised.

[kosmokrator]

Originally Posted by nedd

I have HDX2 and use DAPS. One thing that might help a bit is to use 7.1 paths instead of 7.1.2.
I am sure you are not using .2 in this paths and for Strauts 3D, Symphony 3D or Cinematic verbs you would anyway use additional object auxes for .2 (or .4, .6).

Well, not quite. We're using quite a bit of 7.1.2 channels. Both for Stratus3D and for Halo Upmixer. I like the flexibility to spread into the heights when needed.

Also, we try to minimize the use ob objects to when they really are neccessary. First, we're only doing HT Atmos where localization in the surrounds is as good with the beds as with objects, and second - and that's the big one - we often want to have additional bus processing, something that's impossible with objects.

[arche3]

So can we conclude the answer is hdx3?

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[JFreak]

If your problem is voice count then yes


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[arche3]

Originally Posted by JFreak

If your problem is voice count then yes


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I was wondering about the op question about deleting paths. If he actually tried it.

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[lucienpalmer]

I’m running a separate DAMS via Dante. I can easily fill an HDX3 for a feature film, but it’s all mixer channels because if the tons of bussing. I still have plenty of voices.

I just make sure to run most of my plugins as native, so the HDX cards have room for all the mixer channels.

Technically, I’m using way more busses than necessary in my mix template with my beds all set to 7.1.2 and three 7.1.2 reverbs in each food group. If I was more careful about only using only the absolutely necessary busses, I bet I could fit it on two HDX cards.

So without seeing you session setup, I’m guessing it’s mostly the bussing that filled up your cards. Try switching all the plugs to native, then if you need more power, delete unused busses.

EDIT: I just re-read your OP, and saw all your plugins are native, so ignore that first part and go to cleaning up your unused or unnecessary busses. The system resources panel will tell you how full you are. Posting a pic of that would help.