Benefit of using sound card instead of HDMI port on graphics card when using receiver?

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compddd
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2010/05/15 13:12:36 (permalink)
Right now I have a high quality Onkyo receiver hooked up to my PC via HDMI through an Auzentech XTHD sound card, is there any advantage to using the Auzentech over the HDMI port on my 5870 when using a receiver? The receiver does all of the sound processing correct?

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    compddd
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    Re:Benefit of using sound card instead of HDMI port on graphics card when using receiver? 2010/05/15 19:22:18 (permalink)
    Anyone know?

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    badfastbusa
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    Re:Benefit of using sound card instead of HDMI port on graphics card when using receiver? 2010/05/16 22:06:39 (permalink)
    I have been wondering the same.

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    DarkAngel_ZERO
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    Re:Benefit of using sound card instead of HDMI port on graphics card when using receiver? 2010/05/17 01:18:32 (permalink)
    As far as I know, if you're sending an LPCM signal, meaning a non-DTS HD or TrueHD audio signal, both cards should be sending the same information. However, most Blu-ray movies use DTS-HD and TrueHD, and without the Auzentech card (or equivalent), most programs can't decode those signals.

    The Auzentech card does a hell of a lot of processing work and can even re-encode the signal sent to your receiver. Since you've got the card, I'd just use it and not worry about the ATI HDMI thing.
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    emersj
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    Re:Benefit of using sound card instead of HDMI port on graphics card when using receiver? 2010/05/17 16:14:52 (permalink)
    Use optical audio out if your receiver can support much better sound. Our 9.2 system runs on optical and it works perfectly if your sound card and receiver both support it.

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    joeza
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    Re:Benefit of using sound card instead of HDMI port on graphics card when using receiver? 2010/05/18 07:14:28 (permalink)
    The 5870 can decode DTS-HD and TrueHD I believe
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    Lanceare
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    Re:Benefit of using sound card instead of HDMI port on graphics card when using receiver? 2010/05/18 08:45:21 (permalink)
    emersj

    Use optical audio out if your receiver can support much better sound. Our 9.2 system runs on optical and it works perfectly if your sound card and receiver both support it.


    This is completely incorrect information.

    Optical and digital coax USED to be the best, before HDMI.

    Optical can not transmit HD audio. It can transmit formats like Dolby Digital and DTS, which are very good, but they are compressed. It does not have the bandwidth to transmit Dolby Digital True HD and DTS HD Master Audio.

    Only HDMI can do this.

    Keep your sound card.

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    jcosta223
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    Re:Benefit of using sound card instead of HDMI port on graphics card when using receiver? 2010/05/18 10:46:48 (permalink)
    ^ good point about the truehd and master audio.... but dont expect in games any time soon!!!

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    Lanceare
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    Re:Benefit of using sound card instead of HDMI port on graphics card when using receiver? 2010/05/18 21:01:40 (permalink)
    jcosta223

    ^ good point about the truehd and master audio.... but dont expect in games any time soon!!!


    True, but the soundcard can do Dolby Digital Live and DTS Master Connect. You don't get those going through the video card.

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