[Lowfer] Re: Soundcard question

[Ed Phillips]

Alberto di Bene wrote:

> "Richard Goodman" <wa3usg at comcast.net> wrote:
>
>>
>>     I recently purchased a Gateway laptop. As well as using it for 
>> business
>> purposes, I was hoping to take it out in the boonies with my SDR-IQ 
>> and do
>> some listening to LF frequencies from really noise free locations. 
>> Alas ...
>> It doesn't have a full duplex soundcard. 
>
> ----- snip -----
>
>   Dick,
>
>     first of all let's agree with the terminology. Your card *is* full 
> duplex, because from what you say I understand
> that you can route the line out to the microphone input, and the card 
> works simultaneously in both directions, input and
> output, so it is full duplex. The problem that you mention is just 
> caused by the specific implementation of that card,
> probably at the driver level, where the feature that you need was not 
> considered important or useful, and so not
> implemented.
>
> The usual solution is similar cases is to make use of a software 
> package (not free, but neither terribly expensive),
> called VAC (Virtual Audio Cable). It simulates in software a second 
> sound card. You set the SDR-IQ so that its audio
> output is sent to the sound card simulated by the VAC, and set the 
> other program (Multipsk, etc.) so to have VAC as
> input sound card. Using this method you don't need any kludges or 
> external cables. I use VAC routinely to send the
> output of Winrad to DreaM, for reception of DRM stations.
>
> You can find VAC e.g. here :  http://software.muzychenko.net/eng/
>
> 73  Alberto  I2PHD

    Is this program a possible solution to the problem of using sound 
cards with Vista? 

Ed