Nan and Sandy Sanders wrote:

   I have a question? How important is the sound card to the operation of
DSP software (Argo etc). I think we have proved that almost any card will
work but would we gain any thing by buying a card with a better signal to
noise ratio or better dynamic range?

My opinion is that SNR is relevant for music and pseudo HiFi applications.
When you use a PC sound card to digitize an audio signal coming from a receiver,
the band noise is orders of magnitude greater than the residual card-induced 
noise.
But I may be wrong...

73  Alberto  I2PHD