Re: Computer control of an audio multiplexor

[Joe User <axyz@xxxxxxxxx>]

On Mon, 03 Dec 2007 12:40:32 -0500, Bill Kearney wrote:

>> I am trying to multiplex a number of radios into the 'Line In' on my
>> computer sound card.
>
> Also consider that you might want to use multiple sound card inputs.
> It's trivially easy to add sound ports to a computer using USB devices.
> I've got a home audio setup that has four such USB devices powering
> audio zones.  I use two of the line-in inputs to re-route other external
> signals.  The re-routing is sometimes a bit tricky as it involves
> redigitizing the signals.  On an 'old school' sound card it was possible
> to keep the analog signal and simply re-route it out.  But as soon as
> you get into moving the signals off one device and out another it's
> requires the CPU be involved to process it.
>
> The upside to multiple inputs is the ability to record from them all
> simultaneously, provided you've got enough CPU and storage.
>
> Just a thought to consider.

I did consider it, and that approach is in the running.  I have 3 or 4
surplus sound cards, and I thought about it.  But, I have never done
that, and it seemed so much more correct to just switch the input signals.