I plugged a mic/headphone Y spliter on my smartphone.
My PC sends sound output to my Android phone (Huawei) from a 3.5mm jack plugged to the mic connector of the spliter mentioned above, which itself is connected to my android phone.
I played a music on my PC and started a record application on my smartphone.
When I play & listen the recorded song on my Android device the song is crackling too much, with a very poor quality. I did the same thing on another application (WhatsApp) and the quality is a bit better.
If I use a digital voice recorder instead it works very well.
I don't get it, how can I manage to make it works on my android device ? I have read somewhere on this site that I need to build an "attenuator" but in my case it's not working only on some apps. Can someone explain what's happening technically ?