Virtual outputs to use with AUM

Skid

Hello, I had a reply from AUM people and was told that for the virtual outputs to show up in AUM the app “needs to implement Inter App Audio or provide a AudioUnit3 plugin”. So, AUM can see multiple outputs from IAA apps and AUv3 plugins!

If this is possible, i will submit a request form.

Thank you,
Skid

peter

No, that's not possible in the current audio engine. Maybe in version 4 of Stage Traxx if the demand for it grows.

E50rift

peter I think this would make Stage Traxx absolutely lethal. It’s exactly how I’m wanting to use it. Want to use AUM to route and mix live instruments then ST to play backing tracks and control them inside of AUM all which can then be midi controlled by my keyboard or APC40. Please make virtual audio routing possible in next version 🙏🙏 🙂

Skid

peter actually I got it to work as needed. I found a very expensive Teenage Engineering TX-6 12 in 12 out for a very cheap price.

I can see 12 mono or in stereo groups in ST3. Those show up in AUM also…

Sharonzaz

This is the reason I’ve asked you, Peter, to reimplement the AUv3 and master EQ in the multitrack output when you’ve changed the routing. 🙏😊

In future if there’s a way to send multi outputs to AUM that would be great 😊

There’s also a matrrr of stability and CPU usage between both apps also iPad depending

peter

To be honest I planned on getting rid of inter app audio. Seems to me to be a very niche area used by nearly no one. Stage Traxx can already play nicely with other apps so you don't need something like AUM to use virtual instruments and ST3 on the same iOS device. And with version 4 hopefully having better AUv3 hosting capabilities, I don't see a reason for needing interapp audio.

NachoChez

peter
I Just purchased ST4, excited to start looking at it to replace ST3 in my setup which has been wonderful all these years (Thanks Peter!). The lack of inter app audio ST4 is a surprise and honestly a deal breaker for me. I have ST3 audio output embedded in my AUM setup and then have my live instruments going through the other AUM channels. I also have numerous midi routing chains going on and AUM is my filter tool controlling what is pass through to ST4 for remote controls.
May not seem like a reason to have it for you, but this functionality is part of what makes it such a strong tool in the mobile space. ST3 plus AUM is AMAZING! without the inter app audio in ST4 it feels like a big step backwards and (very sorry to say) will not be an option for me until it supports inter app audio.

peter

The Audiobus framework was last updated over 5 years ago. It no longer even compiles in the current Xcode version without a bunch of warnings. Without any maintenance those warnings will turn into errors sometimes in the future and then I would be forced to remove it from ST4. That's why I decided against adding it in the first place. Trying to implement InterappAudio manually is also not future proof as that technology has been marked as deprecated by Apple and will be remove in one of the future iOS versions.

If you enable virtual midi ports in ST4, they will show up in AUM and you can use them in the midi routing just like when it would run directly in AUM. In ST4 you can now add up to 4 AUv4 plugins per output bus which should take care of all processing needs that you might have.

So I don't see a single use case that could not be realized with ST4 running in parallel to AUM.

NachoChez

peter

While I can run in parallel, it is not ideal. I want to aggregate audio signals inside AUM so I have a single fader that controls a specific output that may include ST4 and other sources. Running in parallel means I cannot do this and must adjust these separately to get common increase/decrease in volume.

If Interapp audio is really in the state you mention, is supporting ST4 as an AUV3 plugin another option? This would allow for tracks from ST4 to be routed in any number of ways into AUM and have a single mixing application for all audio sources.

Anonymous1

I would also like to see this feature

peter

Running ST4 as an AUv3 is not possible. ST4 is built like a DAW. It manages a complex graph of audio units. An AUv3 plugin has the requirement to have a central render method that has all the processing. That's simply not possible. It would be like running a DAW inside another DAW.

NachoChez

peter
I figured that was likely the case, but had to ask. Is there an option to build an AUv3 plugin that just sees/routes ST4 outs? If that is dropped into a AUM track, AUM handles the audio.

Would that be better than using Interapp Audio?

peter

That would literally be Interapp Audio which is deprecated and will be removed in the future. There is no other framework available for this.

NachoChez

peter yeah. I was thinking of it like a separate ST patch bay to avoid your precious comment of having a DAW inside a DAW. Maybe this something out there like this already that works at a os level. Anyone aware of something like this?

peter

On macOS you have Loopback: https://rogueamoeba.com/loopback/

But I don't think something like that is possible on iOS due to Apples Sandboxing security model.

NachoChez

peter Would Audiobus be an option? I know it supports IAA and AUv3, but my understanding it also has its own SDK that allows an application to make audio in/outs available in Audiobus. Could Audiobus be used a a patch bay routing to AUM? AUM supports Audiobus connections already.

peter

The Audiobus SDK was not updated for more than 5 years and already leads to compiler warnings. These warnings will become errors some day. That's definitely not an option.

peter

Closed as this is technically impossible to implement.