1. Guest,
    If you need help getting to know Xenforo, please see our guide here. If you have feedback or questions, please post those here.
    Dismiss Notice

downmixed dvd-a or stereo pcm for beatles?

Discussion in 'Music' started by matthewRaz, Sep 3, 2007.

  1. matthewRaz

    matthewRaz Well-Known Member

    Joined:
    Jan 25, 2005
    Messages:
    68
    Likes Received:
    0
    i usually listen to hi-rez (mostly sacd) by selecting the stereo program (i have a stereo setup). but the "love" dvd-a of the beatles only has a stereo mix in pcm. the downmix in dvd-a is significantly quieter than the pcm stereo (as downmixes always are) - should i just turn the volume up on the downmix?
     
  2. charles white

    charles white Well-Known Member

    Joined:
    Jun 9, 2002
    Messages:
    292
    Likes Received:
    0
    The reason it's quieter is because you're not listening to the 3 other channels. There is no 5.1 folddown stereo mix on the DVD-A. If you want stereo, the PCM tracks are your only choice.
     
  3. matthewRaz

    matthewRaz Well-Known Member

    Joined:
    Jan 25, 2005
    Messages:
    68
    Likes Received:
    0
    my player is doing the downmix. since i have my mains set as large and center, surrounds and sub set to off i get all channels through the main l and r out. multiouts aren't used. dvd-a, multichannel and downmix indicator lights are illuminated on the player (yamaha dvd-c750 universal changer).

    the question is about the sound quality of the high rez downmix with the amp's volume turned up compared to the stereo pcm at "normal" volume.

    thanks for the help.
     
  4. Jack Gilvey

    Jack Gilvey Well-Known Member

    Joined:
    Mar 13, 1999
    Messages:
    4,952
    Likes Received:
    0
    Do you want to know which sounds better? Have you tried it? I wouldn't see an advantage listening to a downmixed 5.1 when there's a stereo PCM track available, though.
     
  5. matthewRaz

    matthewRaz Well-Known Member

    Joined:
    Jan 25, 2005
    Messages:
    68
    Likes Received:
    0
    i was hoping to get the facts before trying to compare. it's hard enough doing a/b tests with instant switching let alone stopping, switching audio programs then level matching.

    the advantage would conceivably be that the downmixing (blending of channels - not downsampling) the dvd-a program would be a significantly higher resolution than the dvd program.

    it would be the same advantage as the format dvd-a over dvd.
     
  6. Jack Gilvey

    Jack Gilvey Well-Known Member

    Joined:
    Mar 13, 1999
    Messages:
    4,952
    Likes Received:
    0
    So, if you know that the DVD-A track is higher resolution than the stereo PCM track, but is lower in level...it sounds like you're asking if your volume control will effect the sound adversely?
    I've compared the DVD-A and DTS 5.1 mixes at home and prefer either to the stereo tracks.
     
  7. matthewRaz

    matthewRaz Well-Known Member

    Joined:
    Jan 25, 2005
    Messages:
    68
    Likes Received:
    0
    alright i'll just decide for myself.

    i guess i was wondering if whatever makes a dvd-a downmix quieter makes the pcm program preferable.

    i've always wondered this as the player always defaults to the multi-channel program. i listen, then select the stereo program. it sounds better, but i don't know if its just the volume boost.

    thanks for the help.
     
  8. FeisalK

    FeisalK Well-Known Member

    Joined:
    May 1, 2003
    Messages:
    1,245
    Likes Received:
    0
    whatever is making the DVD-A program quieter is the dynamic range. its ok to TURN IT UP! [​IMG]

    perhaps the downmixed 5.1 also retains the dynamic range and hence its quieter than the stereo PCM

    we're too used to highly compressed CDs without dynamic range and everything is LOUD.
     
  9. Dave Mack

    Dave Mack Well-Known Member

    Joined:
    Jan 28, 2002
    Messages:
    4,670
    Likes Received:
    4
    Yep, and most sound shrill and ear bleeding nowadays...
     
  10. Jack Gilvey

    Jack Gilvey Well-Known Member

    Joined:
    Mar 13, 1999
    Messages:
    4,952
    Likes Received:
    0
    I think you're right with the latter, a volume boost will always make something sound better in an A/B.
    I think the re-mastering itself has far greater impact than which format you're listening to it in, even the cd (kept in my car) sounds fantastic...I want more Beatles re-mastered like this!
     
  11. matthewRaz

    matthewRaz Well-Known Member

    Joined:
    Jan 25, 2005
    Messages:
    68
    Likes Received:
    0
    i'm a little doubtfull about the disparity being just more musical compression on the dvd-a program.

    i'm listening to the mix-down on my akg k701 headphones through a dedicated tube headphone amp - very revealing setup - cranked much higher than any other sources i listen too. sounds great - maybe less harsh than some of the remastered stuff on the yellow submarine "songtrack."

    got to hear the whole catalog when its done - but what are the chances any of it will be hi-rez? i say little chance.

    i agree the recording (impeccable here) and remastering have most effect. by far. i've got well done stuff in lossy format that sounds FAB.

    so hard to judge - even if i had an spl meter - any difference in level, note, or a stray emotion can affect perception more than bitrate.

    that said - this dvd-a sounds great
     

Share This Page