Head-Fi.org › Forums › Equipment Forums › Dedicated Source Components › Android 4.1 FINALLY USB Audio
New Posts  All Forums:Forum Nav:

Android 4.1 FINALLY USB Audio

post #1 of 26
6/27/12 at 12:55pm
Thread Starter 

Looks like golden times for audiophiles:

http://developer.android.com/about/versions/jelly-bean.html

 

USB Audio

USB audio output support allows hardware vendors to build hardware such as audio docks that interface with Android devices. This functionality is also exposed with the Android Open Accessory Development Kit (ADK) to give all developers the chance to create their own hardware.

Reply

Gear mentioned in this thread:

post #2 of 26
6/27/12 at 1:02pm

THEY LISTENED TO US!!!!

Reply
post #3 of 26
6/27/12 at 4:37pm

WOHOOOO !
My S2 is not waste for music after all !
HAPPY DAY !

Reply
post #4 of 26
6/27/12 at 4:55pm

Anyone figured out if this is standard USB audio support in that most DAC/AMPs will work with just some sorta microusb adapter cable or something??

Reply
post #5 of 26
6/27/12 at 7:33pm

The wait is on for devs to come out with custom ROMs!

Reply
post #6 of 26
6/27/12 at 8:29pm

Yes finally!

 

So far there's no indication that they are using a standard for digital output...it could be its own standard with API calls through Android Open Accessory Development Kit

 

But nonetheless..this is great news.

 

EDIT: Just looked up the ADK website http://developer.android.com/tools/adk/adk2.html

 

Quote:

To play audio over USB, you must use a device running Android 4.1 (API Level 16) or higher:

  1. Plug the AC power adapter into the ADK.
  2. Connect the Micro USB AB connector (small, rectangular plug) to the Phone port on the ADK board.
  3. Unlock your Android device and connect the Micro USB B connector to your device.

    Note: Your device must support Android USB accessory mode. Devices that support this mode include Google Nexus devices.

  4. On the Android device, you should see a prompt to connect to the ADK DemoKit 2012, select Cancel and allow the ADK to connect as a media device only.
  5. Navigate to an application that plays music or other audio.
  6. Play a song or sound and listen to it on the ADK speaker!

Note: When using the ADK with a USB connection to an Android device, make sure the AC power adapter is plugged in. A USB connection to a computer does not provide sufficient voltage to power both the ADK and a USB connection to a device.

 

So from the looks of it...your DAC must support the latest ADK.


Edited by Elythor - 6/27/12 at 8:32pm
Reply
post #7 of 26
6/27/12 at 10:06pm

Thanks.  Seems to be described further here also.  

 

http://developer.android.com/tools/adk/aoa2.html

 

Seems to be a pretty standard USB audio thing, but seems maybe the DAC or device needs some capability to send a usb control request to get the phone to start sending data to the dac?? 

 

Seems like maybe existing stuffs might work if you had a hacked rom to toggle this accessory mode manually?  If we were really lucky this USB Control request that is needed to start the streaming mode is more standard than it seems??  Regardless it really seems were are just a minor USB DAC chip tweak away from android phone USB Audio goodness at worse.


Edited by jasaero - 6/27/12 at 10:08pm
Reply
post #8 of 26
6/28/12 at 8:47am

Nice find!

 

I guess the only way to find out is to plug a USB-DAC onto the Galaxy Nexus (w/ 4.1) and see what happens

 

Too bad I have a Galaxy S2 and Samsung probably will not be porting 4.1 over to it any time soon. Can only hope the XDA community can release something useable soon.

Reply
post #9 of 26
6/28/12 at 9:29am
Thread Starter 

I just updated my galaxy nexus to 4.1 but I have no USB-Cable to try. I'll see if I can get my hands on one and update accordingly.

Reply
post #10 of 26
6/28/12 at 10:07am

Same lack of cable issue for my GNex also.  I have a US VZW one with a slightly hacked ROM that might have issues until there is an official update anyhow.

Reply
post #11 of 26
6/28/12 at 12:06pm

Confirmed that fiio e7 does not work with the new android 4.1 os on a galaxy nexus toro.  I just tried it and have played around with it for a while trying to get it to work.  This is a huge let down for me.  Looks like I might be spending the money on that galaxy S3 after all.

Reply
post #12 of 26
6/28/12 at 6:53pm

Would this work with the original SGS? Mine's still working without issues, except for the free dock that I can't get to work on it  :(

Reply
post #13 of 26
6/28/12 at 10:40pm
Quote:
Originally Posted by ProtegeManiac View Post

Would this work with the original SGS? Mine's still working without issues, except for the free dock that I can't get to work on it  :(

 

If 4.1 is ported to work with SGS (Cyanogenmod etc), you may have a chance.

Reply
post #14 of 26
6/29/12 at 2:16am
Quote:
Originally Posted by proton007 View Post

 

If 4.1 is ported to work with SGS (Cyanogenmod etc), you may have a chance.

 

Thanks, I'll look up all of this. SGSIII is out of the question right now due to the steep price.

Reply
post #15 of 26
6/29/12 at 9:51am
Yeah, I think we will need the source released to get this working on legacy DACs maybe. Toro could have issues just because we need 4.1 proprietary files though. GSM might already work if some of this is proprietary file related as I figure its update hit some of those. It may take DAC updates without hacked AOSP built Roms also. Seems we are closer than ever though.
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Dedicated Source Components

Gear mentioned in this thread:

Head-Fi.org › Forums › Equipment Forums › Dedicated Source Components › Android 4.1 FINALLY USB Audio