As Tony points out, there are some digital cards with supposedly good converters in them. The Lynx Studio LynxTwo or Lynx L22 cards are said to work well. But the computer IS a very noisy environment, and the idea of converters in it scares me. That being said, I'm told that the Lynx cards are very good and have enough shielding to keep noise out. I remain skeptical, having heard the amazing amount of noise in recordings made with my MAudio card in my fanless audiorackpc.
As for cable lengths, 40' is fine with optical, and apparently even with AES/EBU balanced digital as the Lynx cards use. I don't think I would worry about it - much more elegant solution than having the computer sitting in the living room.
I also found it interesting to read Lavry's white papers on sampling rates, and why he prefers 96kHz to 192kHz. I don't know if he's correct or not regarding bits of information available at the two rates, but it's worth looking in to, probably using low-level signals and inspecting resulting captures at the two sample rates. |
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