mlecha at music.mcgill.ca
Mon Dec 21 14:45:05 CET 1998
Is there a simple way to test for a driver's full-duplex capabilities
outside of pd? I've tried mixing several inputs sources such as line-in, cd
audio in, and playing an mp3, which can all heard via the sound cards
output. This suggests to me that my sound card and drivers are full-duplex
capable outside of pd. Or is this a naive assumption?
The doc's for OSS/Free suggest that these drivers are half-duplex only.
I didn't actually try it outside of pd before I bought the commercial
drivers. Are you getting full-duplex audio outside of pd using OSS/Free?
>2) Didn4t try OSS/Linux, because it crashed my computer (alpha)
> the last time I installed it. You could try setting the audiobuffer
> size and look if it works ..
I am unfamiliar with the audiobuffer size parameter. Do I want to set
this for the driver or loading pd?
>1) with OSS/Free, the card only works in full duplex with BIG
> audiobuffer sizes.(kernel 2.1.131)
Same question. How do you set the audiobuffer?
>In my opinion the OSS driver just don4t work as documented, or rather, the
>documentation lacks a specification of minimum audiobuffer sizes.
I have found the OSS email tech support to be excellent and really fast.
Which is why I paid for the commercial drivers. Why don't you get in touch
>3) After trying ALSA I realized, that the ALSA code in pd is only
> full duplex with two soundcards. Then, I4m having problems with ALSA
> Alpha anyway, which I have to investigate further.
Hey, I still have my old SB16. Maybe I can use that as an input device
and use my PCI128 as output. I doubt that win95 would like that
configuration, but ALSA supports it. Thanks for the idea.
I found that the ALSA drivers sounded better than the OSS ones, but have
no testing gear to prove it.
>until then (early Jan), you could only look into s_linux.c and try to fix
>OSS code yourself..
ha! I have the ambition, but I doubt the technical knowledge yet.
There are people in the know here at school though. Maybe between I can
convince them to give a hand for a good cause.
Same to you!
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