audio analog input + usb data cable = sound noises I connect my android smartphone from audio jack output to my pc audio input and get a good analog sound signal. But when I connect this smartphone to  the pc with usb data cable the analog sound becomes hissing e.g. music from smartphone overlaps with noises on pc.
Why does this happen?
How can I eliminate these noises? maybe I have to use some shielded cables? If yes - then audio or usb? or I need some sound direct box or something like that?
The problem was resolved by adding ground loop noise filter like this