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- Jun 20, 2010
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Does anyone know how to reduce noise over the PCI bus or get audio out of a computer without it being contaminated by GPU/HDD EMI? Here's how it sounds:
Sound card/RCA (with significant amplification): hummmmm
Sound card/front panel: HUMMMM crack HUMMMMM bzzt
Ipod plugged into USB: BZZZZZZZZZZT CLICK CLICK CLICK CLICK WHIRRRRRR CLICK CLICK CLICK WHIRRRRRR
Ipod running on battery (with significant amplification): . . .
EMU 0202 DAC plugged into USB: BZZZZZZZZZZT CLICK CLICK CLICK CLICK WHIRRRRRR CLICK CLICK CLICK WHIRRRRRR
I tried a ground loop isolator, but that doesn't do anything to the noise over the audio signal.
Sound card/RCA (with significant amplification): hummmmm
Sound card/front panel: HUMMMM crack HUMMMMM bzzt
Ipod plugged into USB: BZZZZZZZZZZT CLICK CLICK CLICK CLICK WHIRRRRRR CLICK CLICK CLICK WHIRRRRRR
Ipod running on battery (with significant amplification): . . .
EMU 0202 DAC plugged into USB: BZZZZZZZZZZT CLICK CLICK CLICK CLICK WHIRRRRRR CLICK CLICK CLICK WHIRRRRRR
I tried a ground loop isolator, but that doesn't do anything to the noise over the audio signal.