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Different Cards - Does spdif out have any affect on sound quality ?

Discussion in 'Computer Components' started by Tempest, Dec 21, 2003.

  1. Tempest

    Tempest
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    Just a general question....

    There are many different sound cards out there.
    From one's built on the mboard, through to expensive SB Audigy ones.

    Say they all have the digital spdif connector. well, is this just a pass thru socket passing the DVD code from the disk to the external amp, or does the sound card do any work to this signal ?

    Does the make/model/spec/quality of the sound card have any affect on the data stream you get from the spdif socket ?
     
  2. Pootle

    Pootle
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    The sound card may well mess about with the signal - standard practice for SB cards, also even if the signal isn't messed about with , jitter in the clocking can have a noticeable effect on sound quality if you want a really high quality audio system.

    Windows too will get its sticky finger in there given 1/2 a chance

    search this forum or avsforum in the states, there's lots of info about.
     
  3. alexs2

    alexs2
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    If the signal from the digital source goes through Windows KMixer,it will be resampled to 48KHz with fairly poor sound quality as a result.
    There are a number of bypasses for this,and as Pootle points out,not all sound cards are as good as each other,digital o/p format not withstanding.

    The guy you really want to speak to here is Branxx,who knows a lot more about PC sound cards than I do.

    My HCPC has an Audiotrak 192 card,and is used only for digital throughput to an external upsampler/interpolator before the AV32R....using it as a standalone card,than with and without external upsampling,it's quite clear that the card's inherent sound quality via it's own DACs is nowhere near as good as(admittedly much more expensive)offboard processing.

    Branxx will be able to give you the details of some audiophile quality PC sound cards.
     

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