Hi. Sorry for bad english and poor knowledge of audio, if I do anything wrong, just tell me. I'm trying to stream audio from my mobile phone to the pc (a desktop one, not a laptop). I do it with a normal auxiliar cable (2 male jack 3.5mm), and connect it as a microphone or line in so I can record it. Works like a charm. The problem is whenever I plug the mobile to the pc using an USB cable, it starts making noises and static (I don't really know what type of intereference is, tell me if you need a sound record). If I unplug it, the noise stops. Connecting the mobile to a normal power supply with the charger doesn't affects the audio. So I suppose it's not a "battery charging" problem. Here's a list of what I tried until now and still have the problem: -Connecting the auxiliar to the pc using differents analog inputs, and an external sound card in different USB ports. -Connecting the mobile to different USB ports. -Using different USB cables (tried 6 or 7). -Tested with another 3 mobile phones (One is Microsoft Lumia and the other 3 are androids Samsung, LG and my Motorola). -I readed it can be caused by a "ground loop" so I plugged the pc with a 2 pin cable. -Trying to solve the "ground loop", I disconnected the black cable of one of my USB ports, to use it for connecting the mobile. And here's a list of what I want to try: -Buy another auxiliar cable with gold connectors (since mine's a normal one). Thanks in advance.
