Multiple 828x waveform timing/alignment

[detroitdiesel]

Not sure if this should be in optimization/usage or troubleshooting.

When I record a few different mics on a source (kick drum for example) the wave forms are not precisely aligned.

To be clear, if I record all mics through the same interface they ARE aligned. But if I run through 828x #1 and 828x#2 and/or my alesis AI-3 they are NOT aligned. They aren’t off by much but still audible.

I am going to try different clock sources first to see if this solves the problem (internal, 828 etc) but I wondered if there was a setting in the audio driver prefs that would tighten this up.

Logic would dictate that I just run all drums through one interface except each interface is tied to different flavor preamps. 828#1 is the True precision 8, AI-3 is all my tube stuff and 828#2 is direct out from my Dynasonics desk (WAY musical EQs and sweet pres)

I’d like to access each flavor when cutting drums so proper alignment is key.

Maybe a external hardware clock that would whip them into shape?

Thanks in advance

DD

[bjornln]

Hi,


You should have one reference source (word clock for example) for all audio interfaces to keep'em in sync.
If it not that big a deal..
(Not @my studio right now...)
Depending on how much problem you have with your timing alignment, try this:
1. Big difference - move the audio files by hand, keeping one file as your reference for all channels.
2. less of a difference - There is a plugin from motu called (something like) precision delay (??), that can be of use
3. Also check phase

/B

[detroitdiesel]

Thanks bjornln, all units are running off one of the 828 unit clocks. I guess I’ll try internal as a different clock setting. Logic wanted me to set up an aggregate device. Perhaps DP would like that as well.

I never would have even noticed this (DP user since 2004) except I just started using the inputs from 828x #2 from the console AND pres from 828x#1 together on a full drum kit. No bueno.

Manual alignment is what I did for the song I recorded last Tuesday when I discovered this problem. I don’t want to rely on that though. Things should line up imho.

Thanks,
DD

[detroitdiesel]

file:///var/mobile/Library/SMS/Attachments/df/15/D2C2264D-0F31-416D-9025-F23BAE29844E/IMG_0212.HEIC

Photo paste of the sync issue

Three different interfaces all with an SM57 recording a hand clap

[detroitdiesel]

That didn’t work. Tried to post a photo.