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Android phones and USB DACs - Page 171

post #2551 of 8319
Quote:
Originally Posted by jcagara08 View Post

Which kernel to flash for Nexus 4?

 

Personally, I don’t know a custom kernel for Nexus 4 which can support USB audio out (I don't search it).
But I know the USB OTG feature can be enabled on Nexus 4:
 
Then, such a Nexus 4, operating as USB host and using USB Audio Recorder PRO, could work with USB peripheral like USB DAC.
 
 

 

 

 


Quote:
Originally Posted by jcagara08 View Post

Does usb audio recorder pro support continous playing or at least playlists

 

The USB Audio Recorder PRO app can play one-after-another music files stored in a folder: N = N + 1.

 

 

 

 

A shuffle play mode is also possible: N = N + random number.

 

 

 

 

By the way, USB Audio Recorder PRO is currently my preferred music player, because it can "output very natural sound".

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2475#post_9511388


Edited by DanBa - 6/23/13 at 9:28am
post #2552 of 8319
Quote:
Originally Posted by tninety View Post

An update - though my solution works perfectly from Android 4.2 16/44.1 output -> x86 PC running Ubuntu -> Dragonfly DAC (worked also with my Xonar STX as output device), there was no luck replacing the PC with a Raspberry Pi with Raspbian - I'm having USB bandwidth issues with the async AQ Dragonfly, apparently, even after some fixes, I never got it to actually play any sound.

 

I'm going to try my ODROID-X soon (on which the USB bus is much more robust compared to the RPi) and I have an ODROID-U2 on order (since it's basically a much more portable version of same board; though it's a lot more expensive/power hungry than the RPi than I would be comfortable, I'm pretty confident it won't have the same issues). 

 

I also considered the Beaglebone Black + a small two port hub, but apparently that also has USB bandwidth issues so I didn't want to drop the $40+ for it. The ODROID-U2 seems to be the smallest semi-cheap hackable board that runs a full Linux distro.

 

Hopefully I can eventually get this working. Using Android's native USB audio dock output would be pretty amazing, since there would no futzing with USB audio drivers/apps and compatibility with DACs would be near 100%.

I do not know if my problem has any relationship on your dragonfly issue...I also have a dragonfly, and connected it to my Droid razor HD and also got no sound. In my case the phone simply does not produce enough power to let the dragonfly work. When I swapped out the dragonfly with the Fiio E07K which has its own rechargeable battery, all worked very well indeed. It just got better when USB AR Pro released an update that fixed every software glitch I had in the rig.

post #2553 of 8319
Quote:
Originally Posted by James1776 View Post

I do not know if my problem has any relationship on your dragonfly issue...I also have a dragonfly, and connected it to my Droid razor HD and also got no sound. In my case the phone simply does not produce enough power to let the dragonfly work. When I swapped out the dragonfly with the Fiio E07K which has its own rechargeable battery, all worked very well indeed. It just got better when USB AR Pro released an update that fixed every software glitch I had in the rig.

I think it's some issue with the asynchronous nature of the Dragonfly. I've tried it with Android + external USB power from a battery using a split cable and it still wouldn't work (same setup works fine with a PC).

post #2554 of 8319

Galaxy S3 & iBasso Audio D zero-SE USB DAC/amp powered by Sabre ES9023:

http://av.watch.impress.co.jp/docs/news/20130610_602920.html

http://www.hibino-intersound.co.jp/information/3462.html

 

Galaxy S3 > digital USB audio out >> USB OTG cable provided by the USB DAC/amp maker >> iBasso Audio D zero-SE >> headphones

 

 

 

post #2555 of 8319

AWESOME!!! As obscenely impressive as the original D-Zero was from a price-to-performance ratio, I can't WAIT to see what the SE sounds like!! Keep 'em coming, iBasso!!! :D

 

And now, back to your regularly scheduled programming. ksc75smile.gif

post #2556 of 8319
Would like to report that my ALO PanAm is now working with my SIII. Using a Anker 14000mAh battery pack to make the setup somewhat portable or should I say transportable.

USB AR Pro-> Samsung SIII->OTG Cable->ALO PanAm->K702
post #2557 of 8319
Quote:
Originally Posted by Twinster View Post

Would like to report that my ALO PanAm is now working with my SIII. Using a Anker 14000mAh battery pack to make the setup somewhat portable or should I say transportable.

USB AR Pro-> Samsung SIII->OTG Cable->ALO PanAm->K702

This I must see...cool.gif...any pictures?

post #2558 of 8319

-Yes finally my cable came in today! (after 25 days OMG!)

 

 

-Flashed this kernel - http://forum.xda-developers.com/showthread.php?t=2181820&highlight=nexus+4

(ziddey-otg-r156-06230339.zip)

-Already had USB audio recorder trial.

-started UsbAudioTesterROOT app, chose USB device 2:2 (it will be showing as Fiio E17 DAC)

-Apply all settings, start USB audio recorder pro and...

-Bam I confirm that NEXUS 4 4.2.2 (rooted with PA HALO ROM+and said kernel flashed) is compatible with Fiio E17's DAC function

 

calling DanBa  - Please update the list that the Nexus 4 can support USB audio out and it is compatible with Fiio E17 DAC

Nexus 4 = Fiio E17 DAC

 

Can't believe google missed and skipped out this feature compared to major manufacturers, it should ideally be an out of the box feature as it is a Nexus device.

 

Will post audio setup soon...


Edited by jcagara08 - 6/25/13 at 1:49am
post #2559 of 8319

Hello! Today, I have tried using the Arcam rPac with a Samsung OTG cable.I have installed USB Host Controller  and USB Host Diagnostic from Android market, and connected the rPac to LG Optimus L9 and Samsung Galaxy S3 and S4.The programs have showed the rPac, the device was blinking red, when using the volume buttons, but no sound at all.What I am missing? Is there anything else I should have tried in settings, menu, etc. ?

post #2560 of 8319

How about trying to connect the Arcam rPac to your Android phones using the USB Audio Recorder PRO app, available on Google Play store?

There is a free trial version.

https://play.google.com/store/apps/details?id=com.extreamsd.usbaudiorecorderpro

 

If there is any interworking issue, you can contact its developer.

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2370#post_9473798

post #2561 of 8319

Do the Google Edition Galaxy S4 and the Google Edition HTC One still support USB audio at the kernel level?

 

 

 

post #2562 of 8319
I've just got my HP-A3 from fostex and tried to use it with my android tablet,
which works with other USB DACs before using USB AR.
It works; however, sound comes out from A3 is weird.
Songs played were like in another tone.
And I couldn't adjust the bit rate using the USB AR now.
Have anyone encountered similar situation before?
post #2563 of 8319

Everything is perfect between my ODAC and my Galaxy S3 using USB Audio Recorder PRO version 1.2.3.

 

Yes, it’s no more possible to modify the bit rate, used as a workaround for the "first time playback" problem.

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2250#post_9419041

 

But I have no more "first time playback" problem with the latest version of USB Audio Recorder PRO.

 

How about a reset of your tablet?

post #2564 of 8319
Quote:
Originally Posted by DanBa View Post

Do the Google Edition Galaxy S4 and the Google Edition HTC One still support USB audio at the kernel level?







The GPe HTC One should at least, it uses an HTC Sense kernel.
post #2565 of 8319
If it is the case, Google should add code in the Android media player framework (i.e. "fill in the blanks" to interface to the USB Audio driver for ALSA) to support standard USB Audio.
 
"Well, the USB Audio issue feels like it could've belonged at LG, or Asus or whoever the maker of each specific device happens to be.
It's the OEMs and platform vendors that actually implement the USB Audio support (I happened to be involved in this when I was at Sony Mobile).
Google (as of Android 4.1) essentially just provides some of the higher-level mechanisms for detection of USB Audio accessories, while the OEM / platform vendor fills in the blanks. Those blanks can either be very small if you only want audio output at a fixed sample rate, or they can grow quite big if you want more features like recording, voice calls, etc.
 
You could argue that Google should provide a complete basic solution for USB Audio, but that's not the setup today."
 
 
If it is the case, hopefully the additional Google code supporting standard USB Audio should remain unchanged in the future releases of Android.

Edited by DanBa - 6/29/13 at 2:54am
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