On May 29, 2014, at 7:49 PM, Michael Rapp wrote:
> I'll certainly go pick myself up a decent card with a line in. It seems
> silly not to.
Wait, did you just say that you have a SignaLink? Why don't you just use it as
a receive sound card? The sound card in it is a Burr-Brown/TI 2902 series
codec and is quite decent.
When I measured some of the sound cards that I owned, the SignaLink USB came in
with about 2.5 dB better 3rd order IMD and about 1.5 dB better in 3rd harmonic
distortion than the Syba UAUD (a "$5 Amazon special" :-)
Granted, it is nowhere near a Presonus FireStudio Mobile which has another 30
dB better IMD and 3rd harmonics.
For those interested, the MicroKeyer II input codec's 3rd harmonic distortion
was noise limited by -12 dB full scale (very good performance for a 16 bit
device), although it has 1 dB worse 3rd order IMD than the Signalink.
I had intended to publish the full measurements for the numbers I measured (5
different sound cards) but then I went the SDR route and no longer even use
sound cards anymore.
73
Chen, W7AY
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