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Good news about Android phone supports digital audio output
Jun 24, 2012 at 6:25 AM Post #122 of 253
Quote:
wawahwa said:
Hi,
 
I am able to make s2 recognize FIIO e7 as USB audio but I can't redirect the audio stream to the DAC. Does anyone have the cue how I can make it happen?
 
I just flashed CM9/AOSP and then flashed SiyahKernel again. After connect e7 and s2 with OTG, s2 recognize the e7 and e7 also recognize s2 also.
 
Hope this information can help.
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"We just need 3 base things:
1st: USB Host support in Android kernel.
2nd. USB audio driver, in kernel, or compiled as a module.
3rd. Some logic to switch to USB audio card, or back to internal one." 
http://www.slatedroid.com/topic/29289-usb-audio-cards-support-drivers-and-libs/page__view__findpost__p__324675
 
"In ICS, I've done it this way, with audio library and tinyalsa library." [tsynik]
http://www.slatedroid.com/topic/29289-usb-audio-cards-support-drivers-and-libs/page__view__findpost__p__381301
 
https://github.com/tsynik/device_allwinner_novo7a/tree/master/libaudio
https://github.com/tinyalsa/tinyalsa/blob/master/README
 
The developer should do that.
 
Jun 24, 2012 at 3:27 PM Post #124 of 253
qusp said:
no, thats not what i'm saying, you really need to do some reading on USB and how it works. All USB devices can either be set to host, or slave. the GSIII is unlikely to be able to be set as slave so we'll just talk about host.

for the GSIII and others to work with something that exceeds the current limit, but has its own power source, there are 3 options.

1. the device tells the GSIII that it has its own power when they are connected, during the signalling used to negotiate device type, speed of connection etc. it does this with a series of logic level signals on the power line. this logic signal may or may not be hardwired and thus not available as a software update

2. you supply power via an external powered hub.

3. you fluke it, the device works anyway despite exceeding the limit, perhaps because during start up it isnt exceeding the power limit, or it lies to the host. this connection may be 'fixed' in an update at any time if problems arise; or the device exceeds the power limit by whatever tolerance is allowed for an extensive length of time and is found out. the phone refuses the connection.

but I only mentioned the FIIO in passing, if at all, because its listed in Kojaku's screen shot posted a few pages back (at least I think it was his) and this confirmed my thoughts as to why some were working and some were not (the 100 mA not 100 mW power limit), for EXACTLY the same reasons that devices work with ipad or not.  this is part of the USB protocol, these connections and their power budget need to be negotiated and all things need to be in place for it to work, otherwise connecting your phone to a high power device could overheat or even kill your phone, or at the very least run the battery down in no time.
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Ok, thank you. That's why I was asking, not stating. I didn't understand to the full extent that you did so I tried to see how I did. I don't need to do anything. I understand it well enough for my purposes. The thing about how you state things is just that it constantly sounds hypothetical and too involved for no reason. I can't comment on how accurate what you're saying is but it just sounds like you're blabbering information. That's how it is on the receiving end anyway. But sorry, that's besides the point and just my opinion based on my position relative to your thoughts.

In any case, I'd still like to hear if you can definitively answer or not, since you know this in and out, whether there is a legitimate way for the E17 to naturally work with the SIII or any other future phones of a similar design.
 
Jun 27, 2012 at 2:25 AM Post #125 of 253
qusp said:
 
this seems kind of against the point of having such a rig doesnt it? at that point when you are carrying an android phone, a powered hub and a dac and an amp wouldnt you just be better off using a small netbook or laptop plus a decent USB dac/amp?
 
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Definitely agree there. =)
 
http://www.head-fi.org/t/607975/epiphany-acoustics-e-dac-jdslabs-odac-head-n-hifi-odac-discussion/30#post_8365240
 
47075.jpeg
+
 
 
I don't follow the recent fashion with smartphones and tablets, they're all just huge touchscreens with a very weak laptop inside.  10 years ago mobile phones looked different and had more creative designs, they were more cool and unique.
 
Jun 27, 2012 at 3:29 AM Post #126 of 253
According to this post, the SQ of the ODAC, a bus-powered USB DAC, is better using an external linear power supply:
 
"I just added an external linear power supply to the ODAC and the performance improvement is immediate. No longer sounds strained and now the soundstage is nice and wide (I am using speakers not headphones). Overall 'clinical' quality is still there but certainly could be due to other factors. So power is definitely a factor in my case."
"I used this usb extension." [5V power injector for USB cable]
 
 
 

 
Jun 27, 2012 at 3:38 AM Post #127 of 253
Quote:
kiteki said:
 
Definitely agree there. =)
 
I don't follow the recent fashion with smartphones and tablets, they're all just huge touchscreens with a very weak laptop inside.  10 years ago mobile phones looked different and had more creative designs, they were more cool and unique.
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The problem w/ using a laptop/netbook is you're still carry your phone around don't you?  So if you use a brick amp and a brick DAC plus phone = 3 devices.  Adding a notebook is 4.  Tell you what, build me a phone that's as good sounding as my brick amp, brick DAC and that's as powerful as my Thinkpad and I'll be your first customer.  
wink.gif
  I can always use the integrated DAC in my Leckerton UHA6S w/ my Nokia and kill every smartphone out there but I'm looking for more obviously by trying to bridge the gap with my desktop rig. 
 
Jun 27, 2012 at 10:04 AM Post #129 of 253
anaxilus said:
)

Tell you what, build me a phone that's as good sounding as my brick amp, brick DAC and that's as powerful as my Thinkpad and I'll be your first customer.  
wink.gif
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1. Start an interest check / voting thread on how many people want the DX100 to make phone calls, then send an email to iBasso.
 
2. Glue a Sony Z1070 and Sony Xperia S together.
 
Just ideas.
 
Jun 27, 2012 at 10:23 AM Post #130 of 253
Quote:
kiteki said:
 
1. Start an interest check / voting thread on how many people want the DX100 to make phone calls, then send an email to iBasso.
 
2. Glue a Sony Z1070 and Sony Xperia S together.
 
Just ideas.
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get large case,
get large phone android phone with CM7 + USB Host + ALSA 
get ODAC
shanghai all of it into one case, bypass usb port altogether solder the connections to the inside of the devices USB connection, and add a bypass and small transformer from the internal battery directly to the odac.
 
DOMINATE. 
 
wishes and dreams, alice in wonderland style
 
Jun 27, 2012 at 1:21 PM Post #131 of 253
Quote:
kiteki said:
 
Just ideas.
Click to expand...

 
Yeah but I wanted good ones and I said 'as good as' not 'worse' what I have.  
tongue.gif
  DX100 has enough issues already w/o adding a phone.
 
Jun 28, 2012 at 2:45 AM Post #134 of 253
anaxilus said:
 
Yeah but I wanted good ones and I said 'as good as' not 'worse' what I have.  
tongue.gif
  DX100 has enough issues already w/o adding a phone.
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Afaik thickness and low battery life seem to be caveats with all the top-flights, Colorfly C4, HM-801, DX100.
 
Haven't heard the Z1070 but if the Xperia S sound and reviews are any indication it should sound more exciting than a Wolfson chip or Hifiman.
 
IIRC you used an iPhone before, there is the V-moda VAMP as well.
 
Jun 28, 2012 at 3:46 AM Post #135 of 253
Quote:
kiteki said:
 
Afaik thickness and low battery life seem to be caveats with all the top-flights, Colorfly C4, HM-801, DX100.
 
Haven't heard the Z1070 but if the Xperia S sound and reviews are any indication it should sound more exciting than a Wolfson chip or Hifiman.
 
IIRC you used an iPhone before, there is the V-moda VAMP as well.
Click to expand...

And Hisound Studio V, but that has its own issues.
 
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