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    Dolby TrueHD / DTS HD Master Audio Passthrough / Bitstream on T420

    Discussion in 'Lenovo' started by divertiti, Apr 25, 2013.

  1. divertiti

    divertiti Newbie

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    I am having trouble getting Dolby TrueHD or DTS HD Master Audio to bitsream from my T420 and hopefully you guys can shed some light. Currently I am using a displayport->HDMI adapter to input into my Pioneer Elite vsx-21txh receiver which in turn outputs to my 50" Toshiba TV. I can bitstream standards DTS and Dolby Digital no problem and get discrete surround sound, however when I try to play sources with DTS HDMA or Dolby TrueHD, the receiver doesn't recognize that there is a lossless signal and still decodes only the core DTS or DD.

    I'm running windows 7, my receiver supports the HD lossless audio formats, and according to the "Playback device" properties on the T420's HDMI audio device, it also lists "DTS HD" and "Dolby TrueHD" under its encoded formats. My Nvidia driver is a bit old (268.71), however I don't think that is the issue...

    Has anyone had experience outputting HD audio on the T420? Any help would be greatly appreciated...
     
    divertiti, Apr 25, 2013
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  2. Pintu

    Pintu Notebook Consultant

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    I bitstream without DTS HD without issues from my X230 using a DP-HDMI Adapter cable. I don't know much about the T420, but I guess technically it should be possible.

    Is it possible that it's a software player issue? Which software are you using? You could try MPC-HD (which always works for me) or something like the Shark007 codec pack to enable bitstreaming for WMP and Media Center.
     
    Pintu, Apr 26, 2013
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  3. Velocidad

    Velocidad Notebook Guru

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    HDMI+adapter?

    Try only the optical output and see if that works.
     
    Velocidad, Apr 26, 2013
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  4. Pintu

    Pintu Notebook Consultant

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    I think optical and coax cannot bitstream DTS HD
     
    Pintu, Apr 26, 2013
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