Discussion in 'Microphones & Recording' started by saemskin, Dec 3, 2005.

  1. saemskin

    saemskin Active Member

    Nov 6, 2005
    Quick setup before my question. Several external synths & midi controllers, 2 external fx proc's, 8x8 midiman, MOTU 828 MKII...

    My analog IO on my MOTU 828MKII is full, so sometimes I want to route audio out of my DAW into my (for example) fireworx via spdif and back in again. When I use my spdif channel I have to change the clock in my DAW from Internal to spdif.
    Nextly (new word :wink: ) I invariably forget to swith my DAW clock back to internal before I exit my host and later on when I want to listen to someones posted track here my audio is confused/disabled so I have to boot up the DAW again and reset. This sucks. Is there a way around it? Both fx processors accept incoming clock as well as internal clocking, and my midiman has smpte clock available.
    What's going on here guys?
  2. dabmeister music

    dabmeister music Active Member

    Jan 11, 2003
    Woodbridge, Va
    Home Page:
    Well, I'll say this as short as possible. When transfering digital audio, there's other info (data) being sent as well. Each digital I/O device has it's own internal clock. That clock (the AD/DA converters) if not sync'd to some sort of reference (usually word clock), will cause the audio to inherit phase issues, jitter, drop outs and other unwanted artifacts. A lot of us don't take advantage of these little (per say) master clocking devices that help stablize and rid our systems of these quirks. As I've found out, having a master word clock reference/syncing device, greatly improves sonic clarity, system stability & performance. In your case, you'll probably need to assign the DAW as the master and slave everything else. Personally, I've been checking out quite a few of these master clocks like the Apogee "Big Ben", Lucid, or something a little more affordable like "Antelope Audio Isochrone DA" from Sweetwater. Anyhow, just giving my 2 cents worth, maybe someone else can elaborate a little further on this too.

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