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Audio out via USB on Android 10 - The Spotify Community
https://community.spotify.com/t5/Android/Audio-out-via-USB-on-Android-10/td-p/4852572
OS: Android 10, BuildQP1A.191005.007.A1. My Question or Issue. Over the past few weeks, USB-C audio out has been causing major headaches for both mine and my wife's devices. Both seem to be occurring in the same general manner: when switching from bluetooth to USB-C audio playback, the audio stream stops.
How to get all audio(out) through USB on Android ...
https://www.head-fi.org/threads/how-to-get-all-audio-out-through-usb-on-android.822011/
If only UAPP works then that means USB audio output isn't natively supported by your phone. The only way to get that to work is to get an Android-specific DAC (kind of like Made for iPod badge), or you get a phone that supports it natively even without UAPP. I'd be surprised if the Nexus line didn't support it, but it's possible.
How to Change the Audio Output on an Android
https://www.businessinsider.com/how-to-change-audio-output-on-android
How to enable audio switching on Android 11. Start the Settings app and tap "About Phone." Find the entry for "Build number" and tap it seven times. After three taps you should see a pop-up that ...
Audio input through USB in Android - Stack Overflow
https://stackoverflow.com/questions/42271020/audio-input-through-usb-in-android
Most modern Android devices can act as USB host. So you can connect e.g. USB microphone for capturing the audio. Android also contains support for usb_audio class. Use that to get access to the audio on the device. Since you have already experimented with Communication Device Class (CDC), you are aware of Android's USB host functionality.
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