Click discrepancy / MIDI latency

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bricker
Posts: 73
Joined: Sun Mar 08, 2009 6:21 pm
Primary DAW OS: MacOS

Click discrepancy / MIDI latency

Post by bricker »

I'm having a bit of trouble with clicks and MIDI latency. Even with all plugins turned off, it seems as if either all of the MIDI information is playing back about 30 ticks late, or the audio click is about 30 ticks early. I'm not sure which it is and I'm not sure how to test to find out which one it is. It's enough of an offset that it makes the audio click unusable. All of the MIDI is coming from VI's inside of DP, all running in real time. I tried switching to Pre-Gen mode and got the same behavior.

For now I'm just using the MIDI click, but I prefer to use the Audio click and up until today it has never been a problem - I don't recall changing anything in my setup.

Thanks!

UPDATE: After searching the forums a bit more, I came across this thread: http://www.motunation.com/forum/viewtop ... =1&t=42710 in which someone suggested turning off "Sync Recorded MIDI to Path Thru" in "MIDI Solo & Patch Thru" preferences, which seems to have removed the MIDI latency I was experiencing. This is in PD 7.24 by the way. I'm not sure how this will effect my sequence down the road, but for now it's working fine.
bricker
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Joined: Sun Mar 08, 2009 6:21 pm
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Re: Click discrepancy / MIDI latency

Post by bricker »

It seems that this problem has re-emerged :( Does anybody have any ideas? I've determined that it's a MIDI playback latency - Everything seems fine when I am recording, but when the MIDI is played back it is delayed quite a bit.

Update: I've been playing around with it some more, and I discovered that it's sending the MIDI through a bus that is causing the latency. Is it normal for this to cause noticeable delay? And the more tracks (aux, master, etc.) that the bus goes through, the more latency there is, even if there are no plugins enabled. Even just sending the audio track to ONE other track, there is a very noticeable delay. How can I avoid this?

Some more information: It also seems that the latency only occurs between audio tracks. In other words, I can bus from an instrument track, to an audio track, and then to any number of Aux tracks, but if I send it to another audio track (without any plugins or anything special), I get very noticeable delay. And I put the audio and the MIDI going through the same channel, everything syncs up (but I guess that's because they're both delayed the same amount). So it seems the audio tracks are the culprits, but I can't figure out why! I am using the "Audition Click" in Click preferences to test this, with both Audio and MIDI click going at the same time.

Update #2: Looks like it's actually the my compressor (the PSP VintageWarmer2) mostly, plus a little bit of the other plugins, causing the latency issue. I was confused because I had all of the plugins bypassed, yet the delay was still present, so I assumed it wasn't being caused by that. I'd love an explanation for this if anybody has one. I do have DP's Plugin Latency Compensation turned on in Studio Settings.
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toodamnhip
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Re: Click discrepancy / MIDI latency

Post by toodamnhip »

I have found that if you have any latency creating plug in in the master bus, the click will be off. This is due to the fact that the click takes a different route than the master bus, most likely a direct route to the master DP output. Thus, shut off master bus by assigning it to “none” when aligning things to click.
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mesayre
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Re: Click discrepancy / MIDI latency

Post by mesayre »

I was pretty baffled by this issue as well. Just to describe what I was seeing clearly...

Regardless of my driver latency settings, I was getting all my MIDI notes recorded about 150ms late when playing VI's. It would sound correct while I was recording, but on playback (and in the MIDI edit view) all the events would be late. Turning off "Sync Recorded MIDI to Patch Thru", as suggested above, resolved the issue for me. However, that seems slightly buggy, since the description of that preference suggests that turning it on is supposed to make things line up correctly (which is the opposite of the result I get).

Forgive me for being indelicate, but is it possible that the toggle is just wired up backwards?

Cheers!
Mike

Win 7x64, DP 8.05, Focusrite Saffire 6
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dosuna11
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Re: Click discrepancy / MIDI latency

Post by dosuna11 »

Perhaps setting your VI's to play in real time might solve this. Upper right hand arrow on your VI interface.
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mesayre
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Re: Click discrepancy / MIDI latency

Post by mesayre »

No, the real-time option doesn't seem to affect it. I think I may have misunderstood the option; it would make sense if this applies to outboard gear, and it's recording the MIDI in the place that you actually heard the outboard gear play (including the round-trip latency through DP to the device), though I'm not sure why you would want that since it'll then be late on playback. In any event, I don't use outboard synths, and it doesn't seem to matter so long as I keep that option turned off. So I guess...forget it? :)
DP 10 - Win 10 - Ultralite AVB
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