LP 64 EQ & Compressor

Raise your latency. There CPU intensive. With Mixing and mastering, a higher latecy will do a project good. Track or record at low latencies and mix and master at higher ones.
Cj

ORIGINAL: John

I don't know about your latency setting is the cause of the problem as such what I wonder is what is causing the non play. Could it be crappy audio drivers? You say that the CPU is only at 18 % so I don't see how the CPU is a being over tasked. What are your system specs?

CJ as said in another post I never change my latency. Everything works just fine.

I'll have to side with CJ on this one. Both of the LP64 plugs run with PDC enabled. If you're trying to run your latency lower than the sum of your plug's PDC offsets, you're likely to run into problems...no matter how much CPU power you've got. It isn't clock cycles you are lacking...it's just time time you're short on.

ORIGINAL: John

Do you mean Pre Delay Compensation? Sonar has had that for years. And why do you hate to side with CJ.. In this he isn't wrong just not addressing the underlying issue. At least thats the way I see it.

I think that's "Plugin Delay Compensation". Some plugins require a certain amount of time in order to get their work done. As such, they report to the host how much PDC they need (at least I think that's how it works). This typically is handled under the covers and you don't have to do anything specific about it.

The original version of the SIR convolution reverb had a fixed latency of 8960 samples, which works out to more than 200 ms at 44.1 kHz.

I was thinking that your mixing latency had to be greater than your PDC's, but I'm not really sure that's the case. I do know that CPU hungry plugs need to be given some room to move in though. The underlying issue is that some plugs are just plain "expensive".

Thanks for all the suggestions.

I', running XP pro, all updated, on the core 2 Duo, 1GB RAM and lots of fast disks. Audio interface is the RME Fireface 400 with the latest drivers which usually works pretty nice.

I checked Sonar's latency settings and it says I'm using ASIO drivers and, interestingly, has the Latency slider hard-panned to the left (which I guess is high; it just says "fast") and I can't move it.

what is the PDC, and where do I set it?

Just tried a few different settings on the Fireface control called "Buffer Size (latency)" . The default is 256 Samples, and I tried 512, 768 and 1024 with no success.

Everything works fine except putting both LP effects on the Master Bus.

OK, this is strange: I have all the tracks go through one of two buses: Horns and rhythm section. Both buses output to the Master. Leaving the LP EQ on the Master, I put the one instance of the LP compressor on each of the buses, and the project plays perfectly. Even though there is now one more compressor involved.

Thoughts?

how do I download DPC?

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