[Elecraft] Dual Soundcards

[Kok Chen]

On Sep 13, 2010, at 3:00 PM, David Gilbert wrote:

> If I install two identical sound cards in my computer, is there any way to separately identify them so that one Windows application would always use one of them...

On the current version of Mac OS X, every sound device has a unique "device UID" that identifies the specific location of the device in the USB tree, Firewire port, or the built-in audio location of the sound card.  

This unique ID is therefore persistent not just across sleep/wakeup cycles, but also through reboots.  You identify a sound card once (e.g., plugging and unplugging it) and it is good "forever."  

An example of a device UID on Mac OS X is

"AppleUSBAudioEngine:microHAM:microHAM CODEC:fa222200:2,1"

Windows must have the same thing.  In both OS, you are however at the mercy of the software author whether he has implemented this level of detail :-).

73
Chen, W7AY