Hi, one of my main uses for my Mac Pro is preparing radio shows, which involves voice announcing between tracks. I've noticed that I occasionally have a defect in my voice recordings: when I play it back I'll sometimes find a place in the recording where a fragment of sound repeats and replaces the original sound for about a second. Here's an example:
What I spoke into the microphone: "This song goes back to 1982, when Joe recorded his first album."
What got recorded: "This song goes back-back-back when Joe recorded his first album."
The problem is pretty intermittent; I recently recorded a podcast submission that was about ten minutes in length, and it happened once.
The software I use to put together my cuts and record my announcing is Amadeus Pro, from Hairersoft.com. I've been using it for probably two decades. I never had the problem up until I switched from a single processor Mac Pro 5,1 that was running Mojave to a dual processor Mac Pro 5,1 running Monterey (under manually configured OpenCore). I thought at first that this was the famous audio stutter problem that is said to be present in Nehalem processors, but when I check I see that my dual processor machine has two six core 2.93 GHz Westmere processors.
Some other random facts about my hardware setup: 16GB ECC ram, AMD Radeon RX560 4GB GPU, booting off a Crucial P1 1TB NVME in a non-switched Riitop PCIE card. My user home directory is on a Micron 960GB SATA SSD formatted as a ZFS filesystem; I used to use ZFS under Mojave as well, though it was an earlier build of openzfsonosx. The A/D is a Focusrite Scarlett 2i2 connected into a USB3 card; I think that when I switched to this computer I didn't install the Focusrite software, just relying on native MacOS support for this USB audio device.
My OpenCore is a few versions back (maybe four months out of date?), and I'm a couple versions back on Monterey as well (12.6.5).
As you can see, I'm kind of out over the edge on a lot of dimensions: OpenCore, ZFS, non-recommended NVME product... I would be curious if anyone has seen this kind of problem, and perhaps has recommendations for debugging.
Just writing this out I thought of one thing I can do, which is switch to my admin account (which lives on the boot drive in APFS), turn off ZFS completely by exporting my pools, and then try making a recording under those conditions to see if ZFS is involved in any way. It might not hurt to install the actual Focusrite software as well.
What I spoke into the microphone: "This song goes back to 1982, when Joe recorded his first album."
What got recorded: "This song goes back-back-back when Joe recorded his first album."
The problem is pretty intermittent; I recently recorded a podcast submission that was about ten minutes in length, and it happened once.
The software I use to put together my cuts and record my announcing is Amadeus Pro, from Hairersoft.com. I've been using it for probably two decades. I never had the problem up until I switched from a single processor Mac Pro 5,1 that was running Mojave to a dual processor Mac Pro 5,1 running Monterey (under manually configured OpenCore). I thought at first that this was the famous audio stutter problem that is said to be present in Nehalem processors, but when I check I see that my dual processor machine has two six core 2.93 GHz Westmere processors.
Some other random facts about my hardware setup: 16GB ECC ram, AMD Radeon RX560 4GB GPU, booting off a Crucial P1 1TB NVME in a non-switched Riitop PCIE card. My user home directory is on a Micron 960GB SATA SSD formatted as a ZFS filesystem; I used to use ZFS under Mojave as well, though it was an earlier build of openzfsonosx. The A/D is a Focusrite Scarlett 2i2 connected into a USB3 card; I think that when I switched to this computer I didn't install the Focusrite software, just relying on native MacOS support for this USB audio device.
My OpenCore is a few versions back (maybe four months out of date?), and I'm a couple versions back on Monterey as well (12.6.5).
As you can see, I'm kind of out over the edge on a lot of dimensions: OpenCore, ZFS, non-recommended NVME product... I would be curious if anyone has seen this kind of problem, and perhaps has recommendations for debugging.
Just writing this out I thought of one thing I can do, which is switch to my admin account (which lives on the boot drive in APFS), turn off ZFS completely by exporting my pools, and then try making a recording under those conditions to see if ZFS is involved in any way. It might not hurt to install the actual Focusrite software as well.
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