11 Nov
2009
11 Nov
'09
12:49 p.m.
Hans Wilmsers:
I am using embedded linux on ARM processors in another
project, and have
been looking for a simple solution for multichannel outputs for a while
(8 or more), although inputs also are interesting.
Good. What requirements do have on the outputs, inputs ?
I have implemented a
noisy soundcard based on UCB1400 for my hardware a while ago, and could
do some tests with that.
I could do parts of:
1) testing OSC on ARM/embedded Linux
(Don't know whether I could test netjack - I have no experience with
that)
Great! OSC [1] looks interesting, please report back.
I think I will play a little with it also, but for a control
application.
Anyone fluent in NetJACK ?
2) test sending sound to/from the board
(but restricted to 10mbit/s, at the moment)
5) add the preamp part - there are good examples for that in the
datasheets for some differential amplifiers
Please go ahead.
I can contribute by documenting, I'll put it in "soundcard" in [2].
Which amplifiers would you recommend to choose from ?
Actually, if we go for this together, I'd suggest
using a gumstix board
for the tests, or something similar that is completely ready. This would
make it easier to split the project into hardware and software, and it
would enable others to buy off-the-shelf material, or run a
software-only solution.
...
Gumstix [3] seems to be a little expensive. If you want a cheep
readymade part to start hacking with, you can use AT32NGW100 [4].
It is delivered with linux installed.
Regards,
/Karl
[1] http://opensoundcontrol.org/
[2] git://aspodata.se/openhw.git
[3] http://www.gumstix.com/
[4] http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4102
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Karl Hammar Aspö Data karl(a)aspodata.se
Lilla Aspö 148 Networks
S-742 94 Östhammar +46 173 140 57 Computers
Sweden +46 70 511 97 84 Consulting
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