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Thread: Using Android to Drive a USB DAC

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    #1

    Using Android to Drive a USB DAC

    I've been wondering this for ages.

    Would it be possible for Android to drive a USB DAC? Like if I was to somehow get a micro usb to mini usb cable, would we be able to actually use the snd-usb-audio linux kernel module with the Android OS to send audio output? It seems finding such a cable might be a trick. (One might have to settle with a micro -> usb a female, usb a male -> mini deal.) ...

    But just what do the hurdles look like on the Android side? I'm sort of surprised I've never heard any discussion about this.

    Imagine strapping a DAC/amp like The Predator to a Droid for a truly bad ass headphone experience on the go.
    Last edited by thread; 03-19-2010 at 07:26 PM.
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    I mentioned this a couple of days ago in post about cradles for Droids. I sure would like a USB DAC driver, but I suspect the market is too small, and because of limited storage capacity, you'd still be using MP3s. Either that or you have to store high-quality lossless audio on a server somwhere.

    For what that fancy Dac/amp costs, you could get a Squeezebox instead. The Droid is a wonderful remote control for it, there's three or four apps. It works over wi-fi. The built in DAC is very high quality.
    Last edited by LouD; 03-20-2010 at 07:30 AM. Reason: error
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    Oh I use and love a Squeezebox3 already (with an external dac)... And I realize the market for such a feature is probably pretty small, but all the same, I would absolutely love the ability to do it. It would be like a make-shift SB.

    Any devs with an actual idea what it would take in the software? I'd assume it would be pretty easy to load snd-usb-audio.ko... and the real issue would be getting Android to pipe audio through it... if that is, indeed, even a problem!
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    ... I guess that was about the interest level I expected.
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    #5
    No interest in this at all out there?
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    Right now usb hosting is still in the hack phase. Gonna take some time
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    thread - yes!!!!!!! I've been thinking the same thing. Most discussions about this end with someone buying a dock that just gives them an analog, and not digital, output. No, I'm right there with you. Dig around in these forums. I posted some things a few months ago asking similar questions. I think I googled "android USB output" or "android digital USB output" or something.

    In regards to using snd-usb-audio linux kernel module, I have not seen that one yet, so I'll do alittle digging. I think we're on the right track using just a different driver. I'd like to get a super simple audio app working with that driver just to verify.

    Is that driver available standalone somewhere?

    Personally, I don't think this would be terribly difficult, but I could be wrong. As there are simple versions of this for PC (like asio4all) hopefully we can make it work for the droid.
    Last edited by bhjazz; 04-30-2010 at 03:28 PM.
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    Hear hear

    This is something I have been fantasizing about implementing, since I purchased my android phone. I am glad to see that others have the same idea. I think that andless might be the app to try to get it working with.
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    For the time being, the standard USB devices for USB host-capable Android smartphones/tablets are only USB hubs, USB mass storage devices and USB class for human interface devices (for example, mice and keyboards).

    We have to lobby for imposing USB DAC as a standard Android USB device, like a standard USB device for every Mac or PC (i.e. we donít have to request each individual PC manufacturer to add the USB audio capability).

    Google should include USB host (and USB audio) on every new Google "Nexus" device, which is supposed to be a reference Android device for others.

    The 1st out-of-the-box (i.e. without modding) Android device able to support USB audio is the Android 4.0 ICS powered Archos G9.
    Archos 80/101 G9

    The Google issue "Enable USB audio", requesting Google to standardize USB audio on Android smartphones/tablets, is currently ranked 11 of 22,584.
    Issue 24614 - android - Enable USB audio on the Galaxy Nexus (or any Android 4.0 device) - Android - An Open Handset Alliance Project - Google Project Hosting

    Vote: Click on the star (it appears after signing in)
  11. Droid
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    #10
    Apparently, the USB audio feature is enabled on factory Samsung Galaxy S III:
    xda-developers - View Single Post - Official Sound Quality thread

    "I got my sgs3 a few hours ago and just plugged it into my Topping tp30 USB DAC/amp and it's playing audio through it to my speakers!!!"


    Affordable hi-fi rig:
    A sweet-sounding USB digital amplifier for headphones and speakers | The Audiophiliac - CNET News

    music stored on SGS3 > SGS3 player > digital audio stream >> USB cable >> USB DAC/amp Topping TP30 >> speakers















    Keep lobbying for the Android USB audio standardisation (i.e. USB DAC as a standard USB device, like a USB mass storage device, for Android smartphone/tablet).
    http://code.google.com/p/android/iss... Summary Stars


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