Sound Problems

Discussion in 'Mac Pro' started by tomaspavelka, Jan 27, 2011.

  1. tomaspavelka, Jan 27, 2011
    Last edited: Jan 27, 2011

    tomaspavelka macrumors newbie

    Joined:
    Jan 27, 2011
    Location:
    London
    #1
    "I got very few problems, but the sound is one!"

    When I play any video or audio using a number of different media players including quick time 7/8 and I tunes 9.02 everythings fine for until about 10-20 minutes later when the sound crackles and eventually (over the space of about 5-10 seconds) fizzles out till there’s no sound at all. It’s almost like the bit depth of the audio is being reduced before cutting out. At other times the crackling persists for a minute or so then continues to be fine. If I close the media player and reopen it the sound plays as though there was never a problem. I can also get the sound back if I switch to and throw between my Audio interface (m-audio fasttrack pro) and any of the other audio outputs in the system preferences. All ok until 10-20mins later when the same thing happens again.

    If anybody has any suggestions or can relate to the issue at all I would be very grateful for your feedback. Many Thanks
     
  2. SmilesLots macrumors regular

    SmilesLots

    Joined:
    Apr 30, 2010
    Location:
    SW Virginia
    #2
    The usual repair permissions and run maintenance scripts.
    Make sure the driver is up-to-date on that M-Audio device for your OS.
    Try a regular dvd, not downloaded video.
    Monitor cpu and disk activity in Activity Monitor to see if that points in any direction - bad hd or spiking on cpu.
     
  3. Detrius macrumors 68000

    Joined:
    Sep 10, 2008
    Location:
    Asheville, NC
    #3
    Oh, yes yes. You repair permissions by rebooting and holding down command-option-R-P until you hear the machine chime again.


    Seriously, though, the BS about repairing permissions and running maintenance scripts isn't going to make a lick of a difference. Resetting the PRAM could, though. If you stick just to internal audio, do you still have the problem? As the previous poster did say, make sure you have up-to-date drivers for your M-Audio device.
     
  4. elvisizer macrumors 6502

    Joined:
    May 29, 2003
    Location:
    San Jose
  5. tomaspavelka thread starter macrumors newbie

    Joined:
    Jan 27, 2011
    Location:
    London
    #5
    Thank you!

    I just re installed the driver for the M Audio Device and all seem to be good again :)
    Many thanx for all your suggestions!
     

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