AppleMobileBackup seems like it'll work on the on the cli, but it actually doesn't.
It has this really awesome help page that lures you in:
$ /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/Current/AppleMobileDeviceHelper.app/Contents/Resources/AppleMobileBackup --help
Action (one required):
	-b, --backup						 perform a backup
	-r, --restore						perform a restore
	-E, --erase							erase target device
	-C, --change password		change backup password from the given old password
	-e, --extract path			 extracts a relative path to the current directory
	-R, --remove path				removes a relative path from the backup
	-f, --filename path			prints the filename in a backup of a relative path
	-i, --info							 display info about a backup
	-I, --create-info				create a placeholder Info.plist file
	-l, --list							 list the contents of the backup
Options:
	-d, --device deviceid		device identifier (defaults to lockdown)
	-t, --target deviceid		target device identifier
	-s, --source deviceid		source device identifier
	-P, --password password	optional password when changing password or extracting files
	-N, --no-pass-prompt		 ignore terminal prompt for password
	-D, --domain name				domain name for --extract (default "HomeDomain")
	-q, --root path					root backup directory
	-o, --output path				output file for action (not logging)
	-h, --help							 print this message and exit
But I haven't gotten it to do anything with my encrypted backup. Very silent when it errors. Though if you check the console log you'll get slightly more insight.
cvarenc
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CoreAudio's Hog Mode, kAudioDevicePropertyHogMode, or exclusive mode, is quite woefully under documented. This 5 year old forum post is one of the few references to it I found on Apple's domain. The only current Apple docs that mention it are here, and they say absolutely nothing: https://developer.apple.com/documentation/coreaudio/kaudiodevicepropertyhogmode
That said, the comments in some SDK header files are helpful. See a snippet of that on StackOverflow here: https://stackoverflow.com/questions/39037794/on-macos-can-an-app-disable-suppress-all-system-audio-output-which-is-not-emitt
You can also find a real implementation of hog mode in MPV's source code here: https://github.com/mpv-player/mpv/blob/master/audio/out/ao_coreaudio_exclusive.c
And all that said, if you're not sure, you probably don't want to use hog mode. It's poorly represented to the user and there's only a very few niche use cases where it makes sense. Quoting this older post:
As one of the Core Audio engineers wrote answering a similar question "...why do you need hog mode for your app? Hog mode is a really unfriendly thing to assert on the system. As such, it should only be used in circumstances where it is essential like sending non-mixable data (such as AC-3) to the hardware. The vast majority of apps are best off pretending like hog mode doesn't exist.”
Also seeing this in /private/var/log/com.apple.xpc.launchd/launchd.log logs. It's contributing a truly excessive amount of disk writes from the launchd process. 300GB of data written by the process in the 5 days my computer has been running.
Not sure about op but it's not related to an app I'm developing, though I noticed it in the logs while developing. I wasn't positive it wasn't my apps fault until I came across this post.
my sw_vers:
ProductName: macOS
ProductVersion: 14.1
BuildVersion: 23B2073