Apple TV - Toshlink vs HDMI for audio

Discussion in 'Apple TV and Home Theater' started by bomadian, Jul 31, 2008.

  1. bomadian macrumors member

    Mar 4, 2007
    Is there any difference between using Toshlink for audio on Apple TV or using an HDMI cable for both audio and video?

    Thank you.
  2. Peace macrumors Core


    Apr 1, 2005
    Space--The ONLY Frontier
    A toslink cable carries only audio. HDMI carry's both audio and video.

    I have a Toslink cable connected to my stereo system and the HDMI connected to the TV.
  3. umop apisdn macrumors member

    umop apisdn

    Jul 20, 2008
    Essex, UK
    I wouldn't know the difference between quality of audio but a lot of 'experts' prefer to keep audio and video separated. I guess it also comes down to quality of equipment too.

    I would use HDMI for sake of simplicity.
  4. JonHimself macrumors 68000


    Nov 3, 2004
    Toronto, Ontario
    Digital audio/video confuses me. I always thought it was an 'all or nothing' type situation. The case with rca cables, etc was that with better quality cable you can get a better signal but with digital you either received the signal or you didn't.
    Having said that, HDMI and optical audio cables both carry digital signals, right? My understanding is that there should be no difference with either cable but I guess that could be incorrect because I'm not positive.
  5. 61132 Guest

    Oct 31, 2005
    Sometimes the toslink is better. Being completely optical, it eliminates ground loop/electrical noise.
  6. TiggyF macrumors newbie

    Jul 31, 2008
    If you have a reasonable system

    Toslink is better

    HDMI in it's current form has an issue with jitter

    jitter over HDMI has been measured as high as 20 X higher than via toslink or spif coax conection (these two are identical)

    jitter is caused by clock errors between sourse and recieving device, HDMI currently has no way to sync the two clocks.

    High level of jitter has a few effects, a producing a lack of focus and timing to music.

    Note the above applies to all devices with HDMI currently, so applies also to DVD and Blu Ray players used for CD replay.

    Several companies are working on a addition to the HDMI interface to fix this issue, Pio in particular.

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