Multiple digital outputs from a PC - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 16th July 2008, 04:19 PM   #1
herm is offline herm  United States
diyAudio Member
 
Join Date: Mar 2002
Location: Pasadena, CA USA
Default Multiple digital outputs from a PC

Multiple digital outputs from a PC

Iíve seen this question asked a bunch, but never answered.

Hereís what Iíd like to do: Play DVDs from my PC, using a software decoder for DTS or Dolby, and then do outboard DACs to get to analog.

How do I get 5.1 digital channels out of my PC without having to decode it afterward?
Iím dreaming of 3 stereo SPDIF to three outboard DACS. Like this:

DVD-ROM in PC -> software surround decoder -> digital output -> multiple dacs -> buffer -> amp

Any ideas?

-herm
  Reply With Quote
Old 16th July 2008, 04:27 PM   #2
diyAudio Member
 
Join Date: Nov 2004
Location: Wisconsin
Auzentech sound cards can do this if you buy the X-fi Prelude or Meridian and the DIN Extension. Audigy cards can do this as well, although you'll be hampered by the poor fixed 48khz resampling for most applications.
  Reply With Quote
Old 16th July 2008, 05:25 PM   #3
herm is offline herm  United States
diyAudio Member
 
Join Date: Mar 2002
Location: Pasadena, CA USA
Thanks for your help, tschanrm.

I have looked at both cards, and I can't tell if the extension is a
second output, or just the same output duplicated.

Can you get 6 channels of digital out?

-herm
  Reply With Quote
Old 17th July 2008, 01:01 AM   #4
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
I have an Audigy card with 6-channels of digital output going to three external stereo DACs. Like tschanrm said, the audio stream is limited to 48khz. This is good enough for me however.

I've never tried messing with 5.1 playback with my setup, so I'm not sure what is possible in that regard. I use mine as an active 3-way crossover.
  Reply With Quote
Old 17th July 2008, 05:13 AM   #5
herm is offline herm  United States
diyAudio Member
 
Join Date: Mar 2002
Location: Pasadena, CA USA
I must be a noob, but I only see one coax or optical digital out.

Which card are you using? How do you get six?

While we are at it, do you know of any solutions NOT limited
by the 48KHz sampling?

Like you, it probably won't make a difference to me, but I'm
just getting started in this.

herm
  Reply With Quote
Old 17th July 2008, 09:27 AM   #6
phofman is offline phofman  Czech Republic
diyAudio Member
 
Join Date: Apr 2005
Location: Pilsen
This may help:

http://www.head-fi.org/forums/f46/so...f-outs-164061/
  Reply With Quote
Old 17th July 2008, 12:43 PM   #7
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
Quote:
Originally posted by herm
I must be a noob, but I only see one coax or optical digital out.

Which card are you using? How do you get six?

While we are at it, do you know of any solutions NOT limited
by the 48KHz sampling?

Like you, it probably won't make a difference to me, but I'm
just getting started in this.

herm
I'm using the Audigy SB0092 card + kxdrivers + Thuneau Allocator.

There are actually eight digital outputs available via the 40 pin header. Below is a link that shows how to connect to these.

http://electricstart.de/site/optical.htm

There are probably better options than one of these Audigy cards, but they are dirt cheap and fun to play with.
  Reply With Quote
Old 17th July 2008, 01:22 PM   #8
phofman is offline phofman  Czech Republic
diyAudio Member
 
Join Date: Apr 2005
Location: Pilsen
Most of available multichannel audio is limited to 48kHz anyway.

For higher sample rates - ideally buying a card with multiple SPDIF outputs supporting the required rates.

DIYers with linux background can use several inexpensive identical cards with single SPDIF output, re-wire their crystal clock to ensure synchronization and configure alsa to see one large multichannel device.

http://quicktoots.linuxaudio.org/toots/el-cheapo/

http://www.sound-man.co.uk/linuxaudio/ice1712multi.html
  Reply With Quote
Old 17th July 2008, 09:24 PM   #9
herm is offline herm  United States
diyAudio Member
 
Join Date: Mar 2002
Location: Pasadena, CA USA
Alright, there is something I can sink my teeth into!!!

Audigy seems like a real cheap way to get started.

Also, Musicians friend has refurb M-Audio 2496s for
$80 each. Not too bad.

Phofman, I just loaded Ubuntu onto my desktop! Great
timing that you bring up ALSA.

Thanks everyone.

Herm
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Coaxial Digital Audio to 5.1 analog outputs? pekinin Digital Line Level 2 2nd April 2009 02:21 PM
Add analog outputs to cheap digital receivers stef1777 Digital Source 4 24th November 2006 07:52 AM
FS: DEQX PDC 2.6P with digital outputs, black, like new Al Garay Swap Meet 5 26th April 2005 12:20 AM
Question about preamp feeding multiple outputs py Solid State 3 9th February 2005 12:49 AM
decent pc soundcard with multiple outputs? zag0r Digital Source 6 10th May 2004 04:00 PM


New To Site? Need Help?

All times are GMT. The time now is 02:07 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2