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Hi,
I am new to this forum and new to Linux, so please
forgive mistakes I might make in the following explanation of what I am trying
to obtain.
My goal is to have COAX SPDIF out of an embedded
unit, or a USB digital signal that will output to an M-Audio Audiophile USB (or
other intermediate device) which can then send COAX SPDIF to an audio
receiver.
I am using an Aaeon AEC6820, embedded system, with
USB 1.1 out (or the option of a pcmcia card (not bus)). The Chipset in
this device is the VT82C686B
I am trying to get COAX SPDIF out from this system
either by using an external USB device (Audiophile USB by M-audio or other
device) or by internal SPDIF out.
I am using Linux 2.4, and I have read that Linux
2.4 was certainly supporting SPDIF for some devices. The question I have
is will Linux 2.4 support COAX SPDIF for the M-Audio. If not, what
device could I use to get COAX SPDIF out? So far, from the M-audio
we cannot get clean sound out...it pops and sputters and sometimes doesn't put
sound out at all.
Using the M-audio device connected to a USB 1.1
port, we are able to hear clean analog sound, although not as good as we would
expect from SPDIF from the external device...like the M-Audio Audiophile
USB. Digital optical can be delivered by the AEC6820 from a USB 1.1
port...but has a lot of jitter.
I would like to know if I can get
the embedded device with the VT82C686B to output by USB 1.1 or
pcmcia card (not bus) to the M-Audio Audiophile USB device to
get clean SPDIF out of the M-Audio device to an audio receiver.
I want COAX
SPDIF out of an embedded Linux system (either directly or through an output
that can be converted by an external M-Audio Audiophile USB or other
device). I do not manage the embedded system, I am not an admin but I can
access the system to change the driver information or add a patch as necessary.
This embedded system is based on a Linux 2.4.x.x operating
system.
This is what I
know:
1.
Direct optical out of the embedded system
(AEC6820) works but the sound is full of jitter.
2. USB 1.1 out
of the embedded system (AEC6820) will send a signal to the M-audio
Audiophile USB...but the sound is not stable (although sometimes it
works).
If this chipset
based on a Linux 2.4 platform will not output a COAX SPDIF...by way of a pcmcia
card or USB 1.1, or output a signal that can be converted by the M-audio
Audiophile USB to COAX SPDIF, I am thinking of trying to upgrade the embedded
system from the AEC6820 to an AEC6830 on the same Linux 2.4 platform. The
upgraded box does have a direct SPDIF jack out.
The chipset in the
upgraded box is the following:
The AEC-6830 is inside CPU board(GENE-6350) which
uses the ALC650 chipset for audio and SPDIF function.
The manufacturer of
both boxes does not support Linux, so they don't know if I can get SPDIF to work
from the AEC6820 using the VT82C686B. And they don't know if I can
get Linux 2.4 to work on the AEC-6830.
In summary I would
like to know the following:
1. Is there a
way to get the older VT82C686B chipset to work better?
2. If I
upgrade to the new AEC6830 (chipset ALC650), would it be supported on a Linux
2.4 platform (or will I have to try to recompile to a newer version of
Linux)?
3. Is there
any way to get stable sound out of the Audiophile USB (or some
other intermediate device that would output COAX SPDIF) while not
recompiling the kernel?
Thank you in advance
for any assistance.
Marion
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