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Old 06-05-2019, 10:54 PM   #1
sitruc
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Default Audio Glitch every 10 minutes during playback mac OS High Sierra

This has been driving me crazy for a while now (5 months).

I can't track down why my audio will pause almost exactly every 10 minutes.

Whatever is playing, a simple track with no plugins or an entire mix. The playback "glitches" for just enough to throw everything off and then keeps going. It seems to do with the time that I turn on my machine - as in if I turned it on at 9:37 then the glitch will happen around the "7" everytime (e.g. 47, 57, 07 etc.).

macOS 13.13.6 High Sierra
iMac Mid 2011
2.8 Ghz i7
32 GB memory
Apollo Twin Duo lightning
Reaper 5.978/64

Any ideas? Thanks.
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Old 06-09-2019, 04:51 PM   #2
shanabit
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Check

File/Project Settings/ Advanced and look for Limit Project Length Stop Playback at. Make sure that box isnt checked. If it is, set your project length however long you need it to be, always more than what ya need of course
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Old 06-09-2019, 04:57 PM   #3
cyrano
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Have you had a look at Activity monitor?

I don't see an Apple maintenance script running exactly every ten minutes, but it could be cloud related, or Time machine, or...
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Old 06-09-2019, 07:53 PM   #4
sitruc
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Thanks for the help - So frustrating.

I just checked File/Project settings/Advanced and got excited when it said "10:00.00" but unfortunately the box wasn't checked so that doesn't seem to be it.

As far as activity monitor, I have watched it many times and can't seem to see anything that spikes when the drop outs happen.

Could it be that my Superior Drummer samples and Native Instruments libraries are on an external drive and it's "looking" or "checking" for those even though it's already loaded? I'm pretty sure the problem started before I moved to the external drive (firewire).

I'm going to create a project with one thing at a time I guess and see if I can narrow it down. I guess no known hiccup exists. It's difficult to replicate when it only happens every 10 minutes...
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Old 06-10-2019, 03:03 AM   #5
cyrano
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The simplest test I can think off, is running without the FW disk for a while, if possible.

Could be a disk that's set to go to sleep after ten minutes...

Alternatively, see what the disk power settings are in System prefs?

I've always run audio Macs set to "never sleep" and only abandoned that habit a few months ago. No problems yet, but I'm troubleshooting an Audacity crash that only happens when my FF400 goes to sleep and then still after an hour or so and when Audacity has lots of projects open.
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Old 06-10-2019, 07:56 AM   #6
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Make sure your HD's are NOT set to Go to Sleep when possible as well in the system as well as your monitor and Mac
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Old 07-17-2019, 08:06 PM   #7
superblonde.org
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Quote:
Originally Posted by sitruc View Post
Whatever is playing, a simple track with no plugins or an entire mix.

32 GB memory
With 32 GB of RAM, why would any buffering problem exist, whether SSD or HD. Unless your preferences are set in a strange way, you know, those 'advanced' tab settings about read/write buffering. I run reaper using tons of recorded takes stored on an external USB 2.0 drive.

And why always 10 minutes. Sounds more like, a possible powersave or screensave feature turning on, independent of app, other than one limitation in reaper seems to be that it doesn't tell macOS to stay awake the way other apps do.

The only thing I have noticed which causes me hiccups on imac is if I turn the project settings to 'Extreme HQ' for resampling algorithm preferences, when playing back something recorded at 44.1k and I'm at 48k (or something similar to that). So did you try turning that stuff to a lower setting, like "(Fast)".

So hmmm, why upgrading to SSD would be necessary for "a simple track with no plugins" .. umm I can't see how that would fix something.

I have had periodic/repetitive audio glitches in reaper, but it was related to having other audio apps also open simultaneously, and these didn't play well together, since the other app seemed to keep forcing the sound to 44.1k and I had reaper set to 48k, so depending on which app I had switched to foreground in various order of app switching, my focusrite driver apparently did not like one of their "interface reinit" sequences (probably the other app, not reaper's fault).

however:

Quote:
Originally Posted by sitruc View Post
with only an mp3 track playing .
I did have problems with mp3 files at one time.
It was recommended that I switch to a different format, which I did (ogg) and havent had a problem since.

Why not switch to a different format.

Last edited by superblonde.org; 07-17-2019 at 08:09 PM. Reason: mp3
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