[QLab] Random audio drop outs when running qlab with Firewire 410

[Christopher Ashworth]

On Jul 12, 2007, at 8:07 PM, Kevin Warnick wrote:

> I’m experiencing random momentary audio drop outs during shows (4-5  
> per show).  I’m using the Enhanced Audio Version of QLab, on a G4  
> Power book, with a Firewire 410 interface.  I can run cues  
> individually with no drops, but not under show conditions.   Has  
> anyone had similar experience, or have any ideas on what the  
> problem might be?
>

Hi Kevin,

Sorry to hear you're having this problem.  One step in diagnosing the  
problem is to send me the console log, which can be viewed using the  
Console.app utility:

/Applications/Utilities/Console.app

This is where QLab will log any problems it is having.  So for  
example if QLab is unable to pull enough frames from disk in time to  
feed the cues, it will record that fact here.

Additional questions:

- How many simultaneous cues are running when you have the drops?
- How many channels are you playing back per cue when you have the  
drops?
- What's the approximate duration of the drops?
- Does Activity Monitor indicate that the CPU is under heavy load?
- What file format are your cues? (WAV, AIF, MP3?)

Best,
Christopher