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Old 07-22-2019, 10:32 PM
indeloon85 indeloon85 is offline
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Default Latency with LLM + Sends Persist Normal?

Kind of a hard question to describe, but Iím using an Apollo twin into pro tools 2019.6 ultimate (not sure if that matters) and monitoring thru console.
For tracking guitars Iíve been wanting to use the ďsends persistĒ function and run a delay or reverb while utilizing LLM (since Iím monitoring thru console).
My buffer size I have set to 128 (anything lower and there is no noticeable difference other than higher CPU usage). With a simple delay setup on the send, Iíve noticed that I get a slight hesitation in the signal hitting the delay plugin. Iím assuming this has to do with the difference of monitoring thru console, and the audio running thru PTís playback engine, but is there any way to reduce this at all?
Mind you, this is all going thru a writing template that Iíve built which has a lot of busses and returns so I can call up whatever on the fly and when it comes time to mix, it would be an easy segue. Also, I did route my tracks that I usually track just straight to my main outs instead of running them thru any bussing, and noticed a little less latency, but itís still not quite there.

Any ideas or thoughts and reducing this?
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Old 07-22-2019, 10:45 PM
BScout BScout is offline
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Default Re: Latency with LLM + Sends Persist Normal?

Nope. Buffer size reduction is all you can do.
You might want to run the delay in console instead.
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  #3  
Old 07-23-2019, 01:27 AM
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YYR123 YYR123 is offline
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Default Latency with LLM + Sends Persist Normal?

Yes BScout is correct on both fronts

Nothing can be done besides lowering Buffer and you should utilize the console for that delay.

Even in the console there is (bad) delay (latency), itís been proven - search if your curious


This is the major reason I love my HDX card ......sure itís a one trick pony but dang thatís a nice trick
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Last edited by YYR123; 07-24-2019 at 04:14 AM.
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Old 07-23-2019, 03:35 AM
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Drew Mazurek Drew Mazurek is offline
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Default Re: Latency with LLM + Sends Persist Normal?

Quote:
Originally Posted by indeloon85 View Post
Kind of a hard question to describe, but Iím using an Apollo twin into pro tools 2019.6 ultimate (not sure if that matters) and monitoring thru console.
For tracking guitars Iíve been wanting to use the ďsends persistĒ function and run a delay or reverb while utilizing LLM (since Iím monitoring thru console).
My buffer size I have set to 128 (anything lower and there is no noticeable difference other than higher CPU usage). With a simple delay setup on the send, Iíve noticed that I get a slight hesitation in the signal hitting the delay plugin. Iím assuming this has to do with the difference of monitoring thru console, and the audio running thru PTís playback engine, but is there any way to reduce this at all?
Mind you, this is all going thru a writing template that Iíve built which has a lot of busses and returns so I can call up whatever on the fly and when it comes time to mix, it would be an easy segue. Also, I did route my tracks that I usually track just straight to my main outs instead of running them thru any bussing, and noticed a little less latency, but itís still not quite there.

Any ideas or thoughts and reducing this?
Run the delay in Console and then return the track via a Virtual Input. This will bypass the buffer and allow you to use the same delay on the live input and playback via the same Aux send in Console.

Hope this makes sense.
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  #5  
Old 07-23-2019, 08:34 AM
Jesse DeCarlo Jesse DeCarlo is offline
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Default Re: Latency with LLM + Sends Persist Normal?

Here's the easiest way to fix this within Pro Tools: on the aux track that has your delay plugin, find the delay compensation readout in the mix window (says "cmp" followed by number of samples, at the very bottom of the channel strip). If you right click on that, there is an option to disable delay compensation for that track. Do it.

With delay compensation enabled, Pro Tools is holding back the output of that aux track so it lines up with other non-record-enabled tracks that have incurred processing delay from inserted plugins, which you don't want in the case of cue effects on an aux. Of course, you will want to re-enable delay compensation on your aux track later on if you are going to use it in the mix.

Perhaps my explanation is slightly confusing because you are using a delay effect plugin, and we're also talking about processing delay compensation... but I think you get the idea.
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Old 07-23-2019, 08:37 AM
indeloon85 indeloon85 is offline
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Default Re: Latency with LLM + Sends Persist Normal?

Ok Iím going to attempt all of this and will report back.

Thank you all for the suggestions!
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  #7  
Old 07-23-2019, 08:33 PM
indeloon85 indeloon85 is offline
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Default Re: Latency with LLM + Sends Persist Normal?

Following up here.

So ultimately what I found was that my bussing was creating the latency. It works for mixing but not so much for tracking and using the sends persist option. Back to running all thru console!
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