Unexpected Audio Glitches

I'm using a firewire interface (Mackie onyx satellite) into an ~2 year old 13" MacBook Pro and I've recently been getting some audio glitches when recording in Garageband.
I've recently started using a line out from an attenuator for my guitar recording and a DI out from my bass amp for my bass recording. With the exception of the cab sim on the guitar recordings, I'm not running any plugins.
I was previously recording direct, using either the built-in Garageband amp sims or Amplitube 3 (which is supposedly quite CPU intensive) to record both bass and guitar.
Using the plugin method I had no glitches, but somehow when I record direct I get glitches (particularly on the bass recordings). Admittedly, I don't know a great deal about computers, however my experience seems counter-intuitive to me. I thought using plugins placed a greater load on the CPU versus going direct but for some reason I'm getting more problems going direct.
I'm only recording two instrument tracks and adding a drum loop too so I don't know why this is. Can anyone suggest why I could be experiencing these glitches?

funkywrench wrote:
The drivers are current as far as I know.
So you have checked the manufacturers website/forum etc?
The glitches are pops and crackles which I was led to believe are caused by the CPU not keeping up, though its quite possible I'm wrong!
Something you can do is check this via the activity monitor Applications>Utilities>Activity Monitor. You can check CPU use % and System memory %. I had to do this the other day because of freezing while playback. In the list Called Process Name you will see GB. You can have this window open while GB is active. Just check what numbers you are getting with GB.

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Always at that spot though and if i watch the file in Quicktime, it plays fine.
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I can't make a Master DVCam tape for this master because of these audio glitches.
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I read a post about a user having this same sort of issue.
He said when he turns off his video layer, in my case just V1, the audio played fine.
Same with mine.
So it seems to be an issue with the video track playing with the audio track.
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in Apple dvd player there is an audio glitch. But on the original mpeg there is no audio glitch there.
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Have you played the DVD with more than one player without hearing glitches? What, exactly is the glitch? A click? In any case what you report suggests that there is a problem with Apple's DVD Player.
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Got a problem with audio glitching that is driving me insane - hopefully someone can help (please! :_))
I'm on Logic 9.1.1 on a recent MacPro using 10.5.8, 12Gb memory. I've created an arrangement in Logic with two multi timbral / multi-output instruments (Kontakt and Stylus RMX - both up to date versions) with aux outputs for all of the instruments channels; 16 in the case of Kontakt, 8 in the case of RMX.
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Alasdair Reid wrote:
It's as if Aphex Twin has invaded my Mac...
If your deadline wasn't looming, I'd say buss everything to a stereo track and record this stuff. It sounds great, you could use it in another project later...
But to your problem: The only quick solution I can think of for you to try is to create a brand new fresh project and use the selective track import feature to bring your tracks into the new project. Don't start from an old template (that you may still be using since Logic 8 or something) because this could indeed be the root of the problem. Build a new template from Logic 9.1.1, then make a new project from that and import all your tracks. If it's your project that's corrupted somehow, this could be the trick to solve it, and it won't take too long to try, so it's worth a shot.
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Get to it.
Once you've delivered.. I'd open that project again and record all of that lovely Aphex Twin messiness for later use.

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Why do I get a message something like this following message in GarageBand? "Unexpected audio request...(Elastic audio)(-10024)"

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Neil,
Thanks for the response. I started looking for Audioblack in the New Asset list, the Transitions and Effects, all through Audition, manuals, Internet, everything, and about all that I found was reference to an indie band - "Audioblack," or comments attributed to you. I have a lot of material from Dolby, from when I first began using 5.1 Surround in DVDs, but did not see this term there. It was probably in some of their more technical papers, and not the "primer" course ones, that I already had. You very clearly pointed out *what* the problem was likely to be, but I wanted clarification as to the exact solution. You cleared that up beautifully.
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Hunt
PS I still use an older Cambridge as the rear-channel amp out of my Carver C-400 pre. Great unit and still going strong!

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