> Is there an easy way to determine if a sound card is
> full-duplex or half-duplex?

      Well there are several techinques, however the easiest I find is to
try one of the internet phone services, they often tell you whether it is
full duplex or not. For example, http://www.dialpad.com; if you register
with them and open the java applet the program will imediately report your
card as half duplex if it is, it doesn't mention anything if it is full
duplex. TTYL

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