Poor Sound Quality in Windows Vista Ultimate?

Discussion in 'Windows, Linux & Others on the Mac' started by Mark Morb, Jun 9, 2008.

  1. Mark Morb macrumors regular

    Mark Morb

    Joined:
    Dec 19, 2007
    Location:
    Norfolk
    #1
    Hi,

    I'm running Windows Vista Ultimate using Bootcamp. It runs fine with just a couple of anomalies.
    First is that the sound quality is quite poor...almost like AM radio...I've tried installing the latest Realtek drivers but it's made no difference. I've stuck it onto "Rock" preset and that has improved things slightly but I was wondering if there was a proper fix for this?
    Also, even though Vista see's that I have dual processors and correctly reports them (and I get two CPU usage graphs under task manager) applications such as dBpoweramp don't see it and run in single processor mode? Again, any advice would be appreciated.

    I'm running a 24" 2.8GHz iMac with 4GB Ram.

    Thanks,
    Mark Morb
     
  2. gyohng macrumors newbie

    Joined:
    Nov 8, 2009
    #2
    Hello,

    I think the problem happens because OSX has some correction for the sound, and Windows doesn't have any processing.

    I have measured 24" iMac response and created a DSP code for Vista/Windows7 to apply this correction, and a beta version is ready. The solution doesn't work on Windows XP however.

    Here is a link:
    http://www.yohng.com/imacsoundfix.zip

    I also noted, that the microphone is switched on by default, which creates an unnecessary feedback in the sound.

    Please check readme.txt inside the archive with the instruction how to switch the microphone feedback off.

    The measurements were taken from my 24 inch iMac, so I cannot say for sure, how this algorithm will perform on a computer, which is acoustically different from 24 inch aluminium iMacs, but then again you _have_ a 24 inch iMac, so probably it will work properly.

    Thanks,
    George.
     

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