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AUM: Stuck at 44.1 kHz?!?
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I can answer a little on this, Some synths will allow AUM To change their sample rate and some don’t.
A procedure you can do is close all the apps in the background and open AUM first, change to the sample rate you want your audio device to be at and then open one of your apps and see if the sample rate stays the same. Then continue this so you can find out which apps do not allow sample rate conversion.
I sure others on the forum can add to this and be more detailed 😊
You explained it well. It’s a free for all who can change the sample rate and when in iOS. AUM isn’t buggy in this regard as far as I know.
@tja are you still hanging out on an old iOS version? That could maybe be a factor as well.
it becomes even more complicated when adding the hardware settings of an external interface, if present.
(I have no ideas about priority rules according to developer guidelines/specs...)
You probably have an app running in the background
Rebooting the iPad will work. Then do as I mentioned before.
Do you know how to clear background apps?
Do you know how to clear background apps?
Then try setting AUM
Yes, probably another app has set the sample rate.
Ok man, guess I can’t help
Yes because you have another app using the sample rate at 44khz
I’m sure someone else will explain it better than me soon
Ok I let some else pick up the batten.
It's probably just a misunderstanding: the setup tab gives you access to hardware settings, but you have to save them under a name to make the change persistent.
I repeated your steps with 2 interfaces and it always reacted according to your description.
After saving the (empty) session with modified sample rate, those values were recalled.
So the setup tab doesn't store entries as defaults, which would be the common expectation.
yes, additional confusion: it also seems to depend on the interface connected.
When I switched my iCA4+ to 48k the change was not displayed on the settings surface, but the correct values were marked as selected in the poup menu of the respective button(s)...
High quality aka 'measurement mode' only applies to the internal sound hardware - it's ignored with an external interface.
That's right, AUM does try to set 44.1kHz at launch since this is kind of the standard sample rate and I thought it would be best to start with that. If any other recording-enabled background app is running, AUM will not be allowed to set the sample rate or buffer size.
The sample rate is saved and restored with the session.
I can easily change it so it uses whatever the current sample rate is when launched, but I'm not sure that's a good idea. I can also make it use 44.1 only the first time it's launched, and then remember the current setting as a user default for the next launch. That's how it works for buffer size currently. What do you think?
By the way, the buffer size is not saved in the session, which is because I think the buffer size is more connected with the current setup including hardware etc. You often don't want to accidentally change the buffer size when loading another session, for example. But perhaps it makes little sense that the sample rate is saved with the session in that case.
Perhaps it might be good to have some settings where you could save presets where the sample rate and buffer size are loaded into the preset. If you try to load the preset and the current state of iOS doesn’t let you do this, an error message window with an explanation could come up?
IAA zombies continue to be a plague for iOS. I’ve even had instances where closing out open IAA apps and shutting down the iPad didn’t get rid of all of the IAA zombie apps which I only knew existed because their MIDI ports continued to show up in AUM’s MIDI matrix. Open the zombie IAA app and closing them resolved the issue.
Aaaahhh zombie IAA apps, that’s interesting! Could explain some issues with stuck sample rate.
With profile, do you mean what I call "session" in AUM?
No, but it only matters if the app is running in the background. For AudioShare, that means recording or playing or hosting.
I still think that buffer size and measurement mode ("high quality") is not much related to the saved session/project. When you set any of those settings, in most cases you want them to stick that way and not change when you load another session file. Sample rate is a bit different, since it can affect the functioning of hosted apps (some works bad at other than 44.1) and is also a setting that actually changes something in external audio interfaces. (But I see that I added saving of sample rate to session file in a later update, probably from a user request).
BTW, measurement mode only matters for built-in speaker and microphone of the device. Usually not something you'd use for any real musical purposes, although the built-in mic is surprisingly good sometimes.
No worries