* SBLive 3d Positioning
[not found] <E17u0ih-00042S-00@usw-sf-list2.sourceforge.net>
@ 2002-09-25 11:23 ` Alftheo Potgieter
2002-09-25 15:45 ` Takashi Iwai
0 siblings, 1 reply; 2+ messages in thread
From: Alftheo Potgieter @ 2002-09-25 11:23 UTC (permalink / raw)
To: alsa-devel
Hi
Does anybody know how to use the 3D positioning feature of the SB Live
card? I want to place a number of individual sounds in space.
According to the ac97 spec, register 0x22 has bits for depth and center,
which would do what I want, but the STAC9708 only has audio
'separation', which does not sound like specifying a position.
Is the EMU10K1 and the STAC9708 two separate devices, or is it two
interfaces to the same underlying hardware?
alf
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: SBLive 3d Positioning
2002-09-25 11:23 ` SBLive 3d Positioning Alftheo Potgieter
@ 2002-09-25 15:45 ` Takashi Iwai
0 siblings, 0 replies; 2+ messages in thread
From: Takashi Iwai @ 2002-09-25 15:45 UTC (permalink / raw)
To: alfp; +Cc: alsa-devel
At Wed, 25 Sep 2002 13:23:17 +0200,
Alftheo Potgieter wrote:
>
> Hi
>
> Does anybody know how to use the 3D positioning feature of the SB Live
> card? I want to place a number of individual sounds in space.
>
> According to the ac97 spec, register 0x22 has bits for depth and center,
> which would do what I want, but the STAC9708 only has audio
> 'separation', which does not sound like specifying a position.
>
> Is the EMU10K1 and the STAC9708 two separate devices, or is it two
> interfaces to the same underlying hardware?
emu10k1 can do such a job potentially with its DSP engine, but it has
nothing to do with AC97. and, on ALSA, such a dsp code is not
implemented yet.
you can try openAL for 3d positioning, although it's not hardware
accelerated.
Takashi
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2002-09-25 11:23 ` SBLive 3d Positioning Alftheo Potgieter
2002-09-25 15:45 ` Takashi Iwai
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