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Hiface USB -> I2S 24bit/192Khz
Hiface USB -> I2S 24bit/192Khz
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Old 23rd May 2010, 06:12 PM   #361
EUVL is offline EUVL  Europe
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Actually, the hardware is fully published. So easy enough to change to suit us.
The software is also documented and downloadable in bits and pieces, including I2S, etc.

http://www.xmos.com/support/software

We need one volunteer skilled in uP programming, and then all is there.
Unfortunately this is not my strength.

Anyone ?


Patrick

Last edited by EUVL; 23rd May 2010 at 06:14 PM.
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Old 24th May 2010, 10:16 AM   #362
sampler is offline sampler  Lithuania
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Started new thread in digital section, maybe we get more attention there.
Ultimate USB to I2S interface
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Old 25th May 2010, 06:08 AM   #363
audiodesign is offline audiodesign  Italy
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here the pin of the XD1014EVB, received now
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Old 25th May 2010, 07:19 PM   #364
Tolu is offline Tolu  Germany
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Quote:
Originally Posted by audiodesign View Post
Two weeks are too long to wait so I have modified my EMU 0404 USB.

I have changed the power supply electrolytics near the DAC chip and I have got the balanced output on this chip.

All the opamp and all the capacitors on the signal path are bypassed .

The balanced signals with the +2.5Vdc has been connected on a Lundahl transformers like in the my DAc final (DAC Final).

Very simpe this modification, no more than 1 hour.
How would you describe the sound?

I have got an emu 0404 USB in 2006 and I am not very pleased with the sound nor with the driver quality. Too many crackles with USB even with S/PDIF! Not worth the money!
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Old 25th May 2010, 07:28 PM   #365
audiodesign is offline audiodesign  Italy
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Tolu,
I suggest this modification to all, this open many possibilities.

The sound with Lundahl transformers is very good, I would like to test the new LL1674 in this configuration.

I am thinking also to this new design.
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Old 26th May 2010, 01:26 AM   #366
EUVL is offline EUVL  Europe
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Only using one leg of the LTP, no even harmonic cancellation ?
Current out DAC driving a low value resistor as passive IV ?


Patrick
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Old 26th May 2010, 08:25 AM   #367
amb is offline amb  United States
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Quote:
Originally Posted by sampler View Post
Just summarizing all info.

The paramount things in product design we need:
...
- Working bit-perfect (ks) drivers for Windows (XP,Vista,7).

Preferable things we need:
...
- Drivers support for Mac, Linux.
I don't know how others feel, but to me Linux support is absolutely essential. I know there are also a lot of Mac people out there, so that's important too. Windows shouldn't be the only possible platform. If it is, then it's an automatic no-go for me.
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Old 26th May 2010, 12:00 PM   #368
audiodesign is offline audiodesign  Italy
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OK, sampler this grou buy is failer and will be closed

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