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S/PDIF Output

FLOzFLOz
edited December 2013 in General
hi!

Has someone any experience of a DIY implementation of a S/PDIF output?

Since LXR is digital , it could good to save the D/A A/D conversions and also to save a precious analog input on the sound-card.

Cheers
Flo

Comments

  • nightworxxnightworxx
    edited December 2013
    Maybe, but then you'll have to stick to one stereo output, instead of 4 mono outputs. The possibilties of the panning and volume matching of the LXR are quite limited and not comparable to an analogue/digital mixing console. So i am not sure if this is a viable idea.
  • FLOzFLOz
    edited December 2013
    on my sound-card I can enable or disable the stereo link, so it could be 2 x mono :)>- Thus it could even save 2 analog inputs! 
  • nightworxxnightworxx
    Why not sparing the money for a small mixer ? You could connect more outboard gear and still stick to your stereo input even do an A/D and then go into your SPDIF input.
  • FLOzFLOz
    I'am old school: all gears are going through Logic ;) and mixed individually there.

    Ok it seems to be a quite accessible job: http://www.epanorama.net/documents/audio/spdif.html

    Is there any unused digital output on the mainboard? Actually I don't find the schematic on Github.
  • fcd72fcd72
    @FLOz

    running everything thru a DAW calling oldschool indicates you are at most 19 ;-)

    This is Oldschool
    image
  • FLOzFLOz
    Nope. This is hipster ;)
  • nightworxxnightworxx
    But Frank, this is more what i like...So back to topic, i usually end up using 6-8 mono inputs for drum outboard gear directly into my interface/ADA. Even with SPDIF you'll end up with 7 drum voices on a stereo/dual-mono input which makes it really tough to perform some kind of decent mixing, even for a pro. At least if you want to have some stereo imaging and spatial resolution anyhow... On the technical side you need to hijack the digital signal somewhere near the DACs and demux it somehow, as i guess the mainboard has some kind of multistream digital i/o. But this question would be better answered by Julian, as he designed it.
  • julianjulian
    at the moment the audio output uses two I2S interfaces.
    so you would need an I2S capable sp/dif transmitter.
    something like this
    http://www.wolfsonmicro.com/products/spdif_transceivers/WM8805/
    this was just a random google result for such a part.

    and you would have to sacrifice an analog out for the SP/DIF
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