From owner-freebsd-multimedia  Tue May  1 10:59:47 2001
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Date: Tue, 01 May 2001 13:58:39 -0400
From: Jason Andresen <jandrese@mitre.org>
Organization: The MITRE Corporation
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To: Orion Hodson <hodson@aciri.org>
Cc: George Uhl <uhl@rattler-f.gsfc.nasa.gov>,
	freebsd-multimedia@freebsd.org
Subject: Re: " Fwd: RAT problems with aureal vortex1 soundcard "
References: <200105011724.f41HOle31421@mule.aciri.org>
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Orion Hodson wrote:
> 
>      George Uhl writes:
>      >>
>      >>RAT version: 4.2.15
>      >>Host: Dell Precision 210
>      >>OS: FreeBSD 4.2-RELEASE
>      >>Soundcard: Turtle Beach Montego A3D, Vortex1 chipset
>      >>Driver: A. Matey's Aureal Vortex soundcard driver:
>      >>http://www.cis.ohio-state.edu/~matey/au88x0/
>      >>
>      >>Output of cat /dev/sndstat:
>      >>FreeBSD Audio Driver (newpcm) Apr 20 2001 13:54:05
>      >>Installed devices:
>      >>pcm0: <Aureal Vortex 8820> at memory 0xfe100000 irq 19 (4p/1r channels d
>      >uplex)
>      >>
>      >>Description of Problem:
>      >>A. Matey's Aureal Vortex driver works well with CD, mpeg, real player,
>      >>etc. With RAT I see the signal displayed on the audio meter but there
>      >>is no sound. The Audio Category of the configuration options menu
>      >>shows the audio device as Aureal Vortex 8820, Sampling rate: 8-kHz
>      >>and Mono Channel. I've cycled through the various audio sources
>      >>in RAT as well (OGain, Spkr, Pcm, Trebl, Bass, Vol). Nothing works.
> 
> RAT requires the card to support full duplex and for full duplex to
> work correctly.  I've just moved and don't have the test code I've
> used when writing drivers available at the moment for you to be able
> to run diagnostics.
> 
> Cards that I know RAT works with on fbsd are:
>       mss compatible cards
>       cs4281
>       cmi8x38
>       sonicvibes (driver not in -stable or 4.3release)
>       als4000    (ditto - will put on a web page when settled in)
>       es137x
> 
> Cards that I have been led to believe RAT does not work with:
>       maestro-1e (will investigate shortly as flatmate has one)
> 
> You might want to try VAT which works in either full-duplex or
> half-duplex configurations.

I don't think any modern version of VAT support half-duplex
communication.  Apparently the designers thought that everybody would be
using full duplex sound cards by now.  Fortunatly VAT will completely
refuse to start if you have a half duplex card or driver.


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