Two sound cards on one PC?

[Johan Smit]

Hi,
Is it at all possible to run two sound cards simultaneously on one PC?
I would like to couple the audio output from one sound card to the mic
input of the other PC, and run them simultaneously.
Thank you
Johan Smit

 

[Ian Stirling]

Hi,
Is it at all possible to run two sound cards simultaneously on one PC?
I would like to couple the audio output from one sound card to the mic
input of the other PC, and run them simultaneously.

Yes, depending on software.
I have three in my machine. (one is broken and has been rewired as a
PCI powered amplifier.)

 

[Harry Conover]

Hi,
Is it at all possible to run two sound cards simultaneously on one PC?
I would like to couple the audio output from one sound card to the mic
input of the other PC, and run them simultaneously.
Thank you
Johan Smit

AFAIK, most operating systems do not support this. Of course, if you
are capable of writing and integrating your own driver software and
patching the OS, anything becomes possible.

Harry C.

 

[Johan Smit]

Yes, depending on software.
I have three in my machine. (one is broken and has been rewired as a
PCI powered amplifier.)

Thanks, that sounds interesting.
What software and sound cards would you recommend?
Regards
Johan Smit

 

[Harry Conover]

windows 98 supports this just fine as does win 2000
i am currently running 2 cards in one unit at first under win 98 then
upgraded to win 2000 some apps don't allow you to pick which card to use but
most do

Are you sure about that? Windows 98 doesn't support two independent
sound cards for me, so please let me in on your secret.

Then too, how do you select which app talks to which sound card?

Harry C.

 

[jm]

Is it at all possible to run two sound cards simultaneously on one PC?

I would like to couple the audio output from one sound card to the mic
input of the other PC, and run them simultaneously.

Is there any reason you want two sound cards and not simply
a full-duplex card ?
Since both the input and output of sound cards are buffered,
all your software needs to do is empty the input buffer when it
is filled and fill the output buffer quickly enough with the
processed data.
I wanted to do this too long time ago, when most sound cards were
not full duplex, and had a lot of trouble (that was for real time
audio signal processing/filtering for amateur radio listening),
but I think nowadays most sound card support full duplex operation.
I can send a 10-line program for linux which just reads the buffer
and copies the data to the output buffer (ie no processing).
Implementing a proper FFT and appropriate filters which run fast
enough is another story. The program is based on linux's port of
scope.c, a 10-line program for using your sound card as a slow
oscilloscope.

Jean-Michel

 

[Ian Stirling]

Thanks, that sounds interesting.
What software and sound cards would you recommend?

Linux, and most any supported card.

 

[Johan Smit]

Is there any reason you want two sound cards and not simply
a full-duplex card ?
Since both the input and output of sound cards are buffered,
all your software needs to do is empty the input buffer when it
is filled and fill the output buffer quickly enough with the
processed data.
I wanted to do this too long time ago, when most sound cards were
not full duplex, and had a lot of trouble (that was for real time
audio signal processing/filtering for amateur radio listening),
but I think nowadays most sound card support full duplex operation.
I can send a 10-line program for linux which just reads the buffer
and copies the data to the output buffer (ie no processing).
Implementing a proper FFT and appropriate filters which run fast
enough is another story. The program is based on linux's port of
scope.c, a 10-line program for using your sound card as a slow
oscilloscope.

Hi Jean-Michel,
I was not aware of the existence of full-duplex sound cards.
I will certainly look into this. Thank you
Regards
Johan Smit