Control Voltages via Audio Interface

[kybertech]

I want to start a new micro-tonal music project and after some consideration decided to use chuck.

As it seems the only Interfaces with dc-coupled output are the MOTU interfaces. I am considering the MOTU 896 since it has a decent voltage. This point is really important for this proj cause I want to be able use sequences across the whole audio range. But maybe there is another Interface out there which could be adapted for this purpose. I've read good things about the ECHO Audiofire range which have a good Voltage but would require shorting of the output caps as well as good Linux support.

I use Linux so there would have to be driver support available. A quick google search however made me a bit sceptic about the possibility.
I don't really need the dsp features of the device basic I/O would be sufficient since I would be doing it inside chuck anyway. (Depends on performance tough, 1.5Ghz Pentium-M)

I plan to use some automatic calibration for the cv in such a way that I store the floats (too bad there is now way to use 24bit values directly) in a large array aside with each interval. The hope is to come over the non-linearity of the analogue components along with the tuning issue.

IIRC someone here has done something similar with cv maybe the person finds this. But I would appreciate any insights from everybody.


thanks!

[EdisonRex]

There are no MOTU drivers for Linux, at least not from MOTU. They only recently got Windows drivers, and remain mostly focused on Mac. I use a lot of MOTU, but not on my Linux box. You want to do DC output on a MOTU, you probably really need to use a Mac, although I'm sure someone can vouch for the Windows versions (I cannot as I don't use them).

The hardware option (shorting caps) isn't a bad option anyway.

[kybertech]