Subject: RE: [linux-audio-dev] suggestion for developers: "real" quad-chan nel output on an SBlive
From: STEFFL, ERIK *Internet* (SBCSI) ("STEFFL,)
Date: Wed Nov 21 2001 - 19:26:57 EET
> -----Original Message-----
> From: Josh Whiting [mailto:jwhiting_AT_hampshire.edu]
>
> i am a list-lurker, primarily a windows multimedia user, but with an
> interest in audio software development and hence an interest in linux.
>
> anyway, i have and idea that has been provoked by my recent
> explorations
> into quad-channel audio output. Basically, the idea is to
> write a driver to
> interface with the SB-Live EAX bus that converts the SB live into a
> more-or-less 'true' four channel output device. How? 1 -
> setup two stereo
> virtual audio input ports, 2 - assign each channel a status
> in the EAX bus
> as a sound source with a specific spatial position so as to
> emulate the
> direct dispatch of each channel to its respective output in
> the dual-output
> SB live DACs. You may not even need two virtual ports, as you could
> probably assign the main output (sb live wave out) to the front stereo
> outputs and then just send the second (virtual) stereo stream
> to the rear
> outputs.
>
> and bam - the SB live is now a (low cost) four channel output device,
> overcoming the (idiotic, painful) limitations imposed by creative's
> engineering of the board only support a single stereo output
> even though the
> card has two of them...
?
sb live provides 5.1 output under windows (you can set output under
speakers in eax control center (headphones, two speakers, 4 speakers, 5.1
speakers), there's also a demo for that somewhere there). Not sure how it
works under linux (I don't have linux installed on that computer yet).
erik
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