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thundercat600 is offline thundercat600
2010-01-18 , 13:37
Posts: 42 | Thanked: 67 times | Joined on Dec 2009 @ Leeds, United Kingdom
#1
A friend of mine has been expressing an interest in the n900 and its capabilites. I believe it ticks all the boxes, especially compared to the iphone, with one exception. He is a bit of an audiphile and would like to output Digital audio from the device.

Does anyone know if the n900 can currently do this or would a driver need to be developed (something like dacmagic) to allow the digital signal over usb? or prehaps maybe someone is already doing this???

From my understanding you can do this with the iphone, so its a case of, can you do it with the n900????
 
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SubCore is offline SubCore
2010-01-18 , 14:20
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#2
no, this won't be possible any time soon.

the main issue is the USB port, it's intended for charging and (client) data only, no host mode or USB On-The-Go.
but usb-audio interfaces will only work on an USB port that provides host mode.

see here for further info.
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teroyk is offline teroyk
2013-10-08 , 19:26
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#3
Is it still so? There is H-E-N now and I have get USB mouse and USB keyboard and USB memorystick work with it.

I am intresting in if normal audio device that is compliant with USB audio device class v1.1 v2.0 will work with two channels.

I know link below is 7.1 but there read with OS 9.1 only two channels and I think they haven't write any drivers:
http://usb.brando.com/usb-7-1-channe...3c042d015.html

Any comments are welcome.
 
wumpwoast is offline wumpwoast
2013-10-09 , 02:10
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#4
Practically, even if you have digital audio over USB on N900 you still need to power your phone! I don't believe anyone's presented a solution for dealing with signal as well as powering the phone, since I don't believe USB DACs are concerned with providing USB power along with USB data.

Would love to be proven wrong though!
 
skykooler is offline skykooler
2013-10-09 , 02:21
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#5
Originally Posted by wumpwoast View Post
Practically, even if you have digital audio over USB on N900 you still need to power your phone! I don't believe anyone's presented a solution for dealing with signal as well as powering the phone, since I don't believe USB DACs are concerned with providing USB power along with USB data.

Would love to be proven wrong though!
The N900 has a battery. So you don't have to provide power over the Ethernet cable.
 
wumpwoast is offline wumpwoast
2013-10-09 , 21:29
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#6
The friction involved in charging the battery and unplugging the USB Audio interface when more power is needed, makes USB+Digital Audio a non-starter for me. Once I've got the N900 in-line doing audio tasks, I don't want to think about charging the unit or interrupting my audio work!

For me that feeling extends to many other potential uses of N900 USB (DVB, mounting an external disk). In fact, if typical USB accessories had better ways to supply power to upstream mobile devices, we might start seeing mobile devices become more involved in studio work. Sadly for now it's a very niche thing.

EDIT: Super happy to be proven wrong
Last edited by wumpwoast; 2013-10-10 at 02:20.
 
foobar is offline foobar
2013-10-09 , 21:43
Posts: 203 | Thanked: 445 times | Joined on Mar 2010
#7
wumpbwoast, AIUI, you can just use 'USB host with charging' and connect your N900 to a hub or Y-cable+wallcharger.
 

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joerg_rw is offline joerg_rw
2013-10-09 , 22:15
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#8
http://talk.maemo.org/showthread.php...203#post921203
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joerg_rw is offline joerg_rw
2013-10-09 , 22:17
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#9
Originally Posted by SubCore View Post
no, this won't be possible any time soon.

the main issue is the USB port, it's intended for charging and (client) data only, no host mode or USB On-The-Go.
but usb-audio interfaces will only work on an USB port that provides host mode.

see here for further info.
Dang, your bookmarks are collecting a bit of dust, don't they? ;-)

A quick search in forum returned this: http://talk.maemo.org/showthread.php...hostmode+audio
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Maemo Community Council member [2012-10, 2013-05, 2013-11, 2014-06 terms]
Hildon Foundation Council inaugural member.
MCe.V. foundation member

EX Hildon Foundation approved Maemo Administration Coordinator (stepped down due to bullying 2014-04-05)
aka "techstaff" - the guys who keep your infra running - Devotion to Duty http://xkcd.com/705/

IRC(freenode): DocScrutinizer*
First USB hostmode fanatic, father of H-E-N
Last edited by joerg_rw; 2013-10-09 at 23:35.
 

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foobar is offline foobar
2013-10-09 , 22:34
Posts: 203 | Thanked: 445 times | Joined on Mar 2010
#10
Originally Posted by joerg_rw View Post
Dang, your bookmarks are collecting a bit of dust, don't they? ;-)
That post has collected dust.
 
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