Background Sound Distortion
I got my carputer up and running and am having a small problem. I run my sound in this setup:
PCI Soundcard -> analog to RCA converter -> RCA couplers -> monster cable -> auxiallary input on my panasonic head unit.
Now, I have sound and everything, it's just in the background I can hear this whiny high pitch frequency that sounds like my car. It even goes up in frequency when I accelerate, etc.
Anyways I'm wondering if this is normal or if something is up and if I can fix it.