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#11
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Re: Dealing with external ADAT converter latency
I'm using Carbon since one year now with external preamps going in Carbon's ADAT. There may be a very very slight delay due to converters, I didn't feel to check out... anyway recording acoustic instruments including drums there is no audible latency at all, no difference from the Carbon's preamps.It's the best system I ever had and I had a full TDM system.
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#12
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Re: Dealing with external ADAT converter latency
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Kick 1: RE20 > Neve 8801 > ADAT Snare: 5790 > Radial EQ > API 312 > ADAT Toms 1-3: Audix D2 (x2) and D4 > API 312 > ADAT Overheads: WA84 (x2) Vintech Dual 72 > Aphex Comps > Orban EQs > ADAT That's seven out of eight channels. The 8th ADAT input channel is used for either a GT Brick + RNLA for bass DI, or bass into a dbx 676 > ADAT for the same purpose. That leaves me with three, or sometimes four additional drum mics, which are plugged into the Carbon mic preamps: Kick 2: Yamaha Subkick > Carbon Hi Hat: A/T 450 > Carbon Room (mono or stereo) - Soundelux ELUX 251 (x1 or x2) > UREI comps > Carbon Toss in a couple of guitar tracks, a mono or stereo keyboard track, and a scratch vocal - all going into Carbon - and that's my typical setup for laying down basic tracks. Carbon is replacing a 32 x 32 I/O HD3 Accel rig that I have been using for about 15 years... so in the past, my I/O was literally all on Digidesign converters, and everything had the exact same latency. It's not all on the same converters anymore with the Carbon setup. I know how to nudge, and will do so in order to get the kicks and room mics aligned with the ADAT tracks if I have to - I was just wondering if anything had changed in terms of best practices in the latest version of Pro Tools Ultimate - I've been on PTHD 10 for so long now, I'm not up to speed yet on the latest software version. That's why I was asking.
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Phil O'Keefe PT 2023.6 Ultimate (Perpetual) | Avid Carbon | M1 Max Mac Studio; 32 GB RAM / 1 TB SSD, macOS 13.4.1 Ventura. PT 2023.6 Studio (Perpetual) | M1 MacBook Air; 16 GB RAM / 1 TB SSD, macOS 13.4.1 Ventura. |
#13
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Re: Dealing with external ADAT converter latency
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Phil O'Keefe PT 2023.6 Ultimate (Perpetual) | Avid Carbon | M1 Max Mac Studio; 32 GB RAM / 1 TB SSD, macOS 13.4.1 Ventura. PT 2023.6 Studio (Perpetual) | M1 MacBook Air; 16 GB RAM / 1 TB SSD, macOS 13.4.1 Ventura. |
#14
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Re: Dealing with external ADAT converter latency
To my understanding, the buffer size is no longer an issue with recording in Hybrid mode. You can leave it set at 1024 or at least I thought unless there's something I'm missing I wasn't informed on from one of Avid's Carbon videos.
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What is more relaxing than Music? Pro Tools Carbon for macOS 12.7.4 My HDX for Windows11. Gigabyte Z490 Vision D - BIOS F21b Intel Core I9 10850K Windows11 / macOS 12.7.4 Hackintosh / 32GB of Rams Avid Carbon/HDX 2024.3 Ultimate - 8x8x8 HD I/O - PT Dock - PT Control - Artist Mix (1) Universal Audio Apollo Twin|X - UAD2 Pci-E and Satellite USB Octo v.11.0.1 - SOLO 610 - Twin-finity Bricasti M7 (2) Lexicon PCM96 Neumann KH805 - KH310 Yamaha NS-10M Avantone Mixcubes Grace Design M905 Etc, etc, etc. |
#15
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Re: Dealing with external ADAT converter latency
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VI's need to be recorded with the lowest buffer size the system can reliably support in order to get the system's lowest possible latency while doing so. All the DSP in the world won't help a bit if you're trying to record a VI that's running natively on the computer's CPU. While I have several hardware keyboards and my clients often use their own, sometimes people want to run through a VI while recording basic tracks, so the 32 sample buffer stability of Carbon while running at 44.1 kHz on a Mac mini M1 is definitely something I can appreciate.
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Phil O'Keefe PT 2023.6 Ultimate (Perpetual) | Avid Carbon | M1 Max Mac Studio; 32 GB RAM / 1 TB SSD, macOS 13.4.1 Ventura. PT 2023.6 Studio (Perpetual) | M1 MacBook Air; 16 GB RAM / 1 TB SSD, macOS 13.4.1 Ventura. |
#16
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Re: Dealing with external ADAT converter latency
Yes it's not really an issue anymore. I was working with Avid to hammer this out. I run huge pop sessions, tons of plugins and recording as fast as you can humanly move. I was experiencing lags after hitting record in quick succession on any buffer besides 128. Thats been fixed in PT 2021.10. For whatever reason my system is the snappiest on 256 so since the buffer/latency is not an issue I usually leave it parked there while tracking.
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#17
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Re: Dealing with external ADAT converter latency
Hey, Phil!
I also went Carbon from a 32 I/O Accel rig. Been rough. Offset with a negative number in the PT mixer view is the simple solution. Since Carbon doesn't have delay compensation on inputs for monitoring during tracking, the other simple option is to have all 8 Carbon inputs bussed to an aux and using Time Adjuster to delay them to match whatever the offset is (a simple mult recorded to both Carbon and ADAT at once will give you that offset). Feel free to reach out directly if you need anything! |
#18
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Re: Dealing with external ADAT converter latency
Hi Phil,
Have you tried turning off Auto Low-Latency in Pro Tools (Blue Mode)? Here's a good article describing it: https://www.puremix.net/blog/underst...pensation.html [I]Pro Tools has a feature called "Auto Low Latency" that is usually ON by default. The idea behind this is that, if you put an audio track in input monitoring and/or recording mode, you will want to record something to it. And if this happens from a real source (e.g. your guitar player needs to record an overdub), Pro Tools assumes you will want the least possible latency to make sure the guitar player can hear what she's playing (yes, she) in time with her performance. "Auto Low Latency" makes sure that the Automatic Delay Compensation rule is broken for tracks that are put in input monitoring and/or arm record mode (green "I" or red dot turned on). Most of the time this is what you want (especially if the session has lots of plug-ins already) but in this case we don't. We might use this technique to bounce a track into another, and it's paramount that ADC is maintained so we can monitor correctly and commit to the print. To fix this, we head over to the "delay compensation" pane, at the bottom of that audio track (make sure you have "Delay Compensation" turned on in the "View > Mix Window" menu, to see it). The three fields indicate, from top to bottom: the total delay, in samples, of that track the user offset, in samples, of that track (if any) the total compensation, in samples, of that track, required to equal the delay of the slowest track in the session normally these fields are all green, but in Pro Tools they can be orange to highlight the slowest track in the session. If they are red, it means the track is not being compensated correctly. Each DAW has a maximum of samples it can compensate. To turn off "Auto Low Latency" mode for a given track, we right-click on the third, lowest-field of the Delay Compensation Pane, then click on "Auto Low Latency OFF". The compensation field will now look blue to let you know that Low Latency mode is disabled for that track. Best, John Whitcore Sr. Principal Product Manager - Pro Tools Hardware [email protected] |
#19
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Re: Dealing with external ADAT converter latency
Isn’t there a keyboard shortcut for this as well?
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