Bidirectionnal sound card

Bidirectionnal sound card

[Marc SCHAEFER]

Hi,

I would like to buy a bidirectionnal sound card, able to record
and play at the same time. Someone told me that the
SoundBlaster 128 PCI was hardware-wise able to do that, and
also Linux supported with this feature.

What driver is to be used, BTW ?  Is there any open-source (no cost
or not) driver fulfilling my needs ?

Thanks for any hints.

Re: Bidirectionnal sound card

[ljp]

You will need to buy the OSS sound driver for bi-directional
sound... The free one does not have support for that. :o(
LP

Re: Bidirectionnal sound card

[Marc SCHAEFER]

On Wed, 12 May 1999, ljp wrote:

> You will need to buy the OSS sound driver for bi-directional
> sound... The free one does not have support for that. :o(

But, do they offer source code, or it's binary-only ?  And if it's binary
only, do they offer free upgrade for, say, 5 years kernel releases ?

Re: Bidirectionnal sound card

[ljp]

I believe it is binary only. Sorry- 
You can go here for more information. They do have a demo, but you'll
have to reload it every few minutes or so. I have tried it, and am
going to buy it soon, myself, as I need this feature.
http://www.opensound.com/

LP


> You Will need to buy the OSS sound driver for bi-directional
> sound... The free one does not have support for that. :o(

>But, do they offer source code, or it's binary-only ?  And if it's binary
>only, do they offer free upgrade for, say, 5 years kernel releases ?

Re: Bidirectionnal sound card

[Thomas Sailer]

Marc SCHAEFER wrote:

> I would like to buy a bidirectionnal sound card, able to record
> and play at the same time. Someone told me that the
> SoundBlaster 128 PCI was hardware-wise able to do that, and
> also Linux supported with this feature.

Yes

> What driver is to be used, BTW ?  Is there any open-source (no cost
> or not) driver fulfilling my needs ?

Both ALSA and the driver in the 2.2.x kernel series can do this.

Tom

Re: Bidirectionnal sound card

[psycho]

That's called Full Duplex. Yes the Soundblaster 128 PCI supports it, so
does the Live! and i'm sure some other cards do as well. The soundblaster
live! is currently supported, though only with beta-drivers. I'm not sure
about the 128 PCI.

jeffrey

On Wed, 12 May 1999, Marc SCHAEFER wrote:

> Hi,
> 
> I would like to buy a bidirectionnal sound card, able to record
> and play at the same time. Someone told me that the
> SoundBlaster 128 PCI was hardware-wise able to do that, and
> also Linux supported with this feature.
> 
> What driver is to be used, BTW ?  Is there any open-source (no cost
> or not) driver fulfilling my needs ?
> 
> Thanks for any hints.
> 
> 

Re: Bidirectionnal sound card

[Bill Nottingham]

Marc SCHAEFER (schaefer@alphanet.ch) said: 
> I would like to buy a bidirectionnal sound card, able to record
> and play at the same time. Someone told me that the
> SoundBlaster 128 PCI was hardware-wise able to do that, and
> also Linux supported with this feature.

If you want to do true full-duplex, you should be able to use
(unless I'm horribly mistaken):

- Ensoniq ES1370/1371 (Sound Blaster PCI64/128, AudioPCI)
- S3 SonicVibes (not recommended)
- Trident 4DWave DX/NX
- CS423x based cards

> What driver is to be used, BTW ?  Is there any open-source (no cost
> or not) driver fulfilling my needs ?

For the Trident 4DWave cards, you'd need to use the ALSA drivers
(http://alsa.jcu.cz/), for the other cards you can use either
ALSA drivers or the standard kernel drivers.

Bill

Re: Bidirectionnal sound card

[lconrad]

Marc SCHAEFER <schaefer@alphanet.ch> writes:

> On Wed, 12 May 1999, ljp wrote:
> 
> > You will need to buy the OSS sound driver for bi-directional
> > sound... The free one does not have support for that. :o(
> 
> But, do they offer source code, or it's binary-only ?  And if it's binary
> only, do they offer free upgrade for, say, 5 years kernel releases ?

It is binary only, but you can upgrade free for 5 years of kernel
releases.

-- 
Laura (mailto:lconrad@world.std.com , http://www.world.std.com/~lconrad/ )
(617) 661-8097	 
233 Broadway, Cambridge, MA 02139

Re: Bidirectionnal sound card

[Deirdre Saoirse]

On 13 May 1999 lconrad@world.std.com wrote:

> It is binary only, but you can upgrade free for 5 years of kernel
> releases.

I will also say about OpenSound: I have been 100% impressed with their
tech support. I have twice had to ask them questions and I had the correct
answer via email in less than 15 minutes.

_Deirdre   *   http://www.linuxcabal.org   *   http://www.deirdre.net
"Everyone needs the luff of a fine penguin" -- Mikey

Re: Bidirectionnal sound card

[Thomas Sailer]

ljp wrote:
> 
> You will need to buy the OSS sound driver for bi-directional
> sound... The free one does not have support for that. :o(

Wrong. Try looking at the code. The CS423x, es137x, sonicvibes
drivers can do full duplex

Tom