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Trying to enable USB audio on android phone plus iPad to create twitch stream
Hello everybody, this is an iPad related question in a sense.
I am trying to set up a streaming set up so that I can broadcast myself playing from my MIDI keyboard over to a twitch stream.
In my set up I’m using USB-c dongle connected to my USB-c iPad Pro 2018.
I am playing my midi keyboard which is rooted into the USB-c adapter and playing sounds from GarageBand piano.
At the same time, I am wanting to play an MP3 from my android phone carry that audio out to the USB-c adapter/dongle, which connects to the iPad , therefore enabling both inputs (audio from the phone) and midi data from the keyboard out through to the iPad.
From there, the iPad carries its audio output to the twitch stream.
The problem I am having: my android 12 phone, when I connect my USB-c cable from the phone to the USB-c port on the dongle which is connected to the iPad, the android settings recognise the change, but the audio remains coming out of the phone’s speaker and not through the USB-c cable no matter what settings I try in android.
There are multiple USB modes on android phones, one of which is ‘data’, and another to carry audio. You can switch between the two modes.
When I switch over to USB audio in my android settings, it’s attempts to switch, but often reverts to the USB setting rather than the USB audio setting. It’s like it’s trying to make the handshake with my USB-c adapter, the one connected to the iPad, and failing.
It’s only a fairly basic adapter, cost me around £30 on Amazon, my friend told me that it’s possible the adapter may need DAC audio conversion capability built into it for this to work.
Do you think he’s right?
Is this what is causing the handshake failure do you think?
Thanks for trying to help. I realise this is not strictly an iOS question. Kind regards, Phil.
Comments
Hi. I suspect that the Android phone may be trying to be the USB master, as if it was sending to an audio interface. But the iPad will always assert bus mastery, so the Android device fails. The Android device probably has a mode where it can be a USB slave to a computer, but it will only be able to do backups and file transfers, not audio streaming. You may have to use an audio connection to make the transfer. Incidentally, this is the remarkable feature of the iConnectivity devices – they have 2 USB host ports, so they can transfer audio streams between two "computer" devices, like an iPad and a Mac.
I think he is right. You are missing a USB audio device in your setup.
You will need to plug it into the iPad so you have a way to get the audio into it.
If your Android has a headphone jack, run audio out of that into the USB audio device inputs.
If you have no headphone port, you may need a second USB audio device to get audio out of the Android USB port.
Then, since you have used the iPad USB port by plugging a audio device into it, you now need a way to connect the KB. Bluetooth is an option. Getting a USB c hub is another. You plug the hub into the iPad to get more ports to connect multiple things simultaneously.
The easiest thing would be to get the MP3 off the Android and onto the iPad. Play it back directly on a track in GarageBand and have your piano on another track. No hardware or setup nightmare necessary.
Guy, thanks a mill for the help. Got it sorted in the end.
It turned out not to be as technical as any of the thoughts we were having!
At some point, the android device stopped ‘flicking between’ switch audio modes (in settings), and in the end, my set u- was:
— 3.5 audio out from phone to L , R phono input on 2 of of 4-port audio interface (behringer 404umc hd)
And then the usb carried that signal out the back of the Behringer, rightly so, in to the usb-c dongle.
The final crucial step was enabling an input/track in AUM to receive the 2 channels of the behringer box that the phone audio was piped into.
Crikey , what an ordeal! So simple, u know those days when your brain just refuses to get it together?!
Kind regards guys.