My purpose is to play my digital piano while connecting its audio output to my phone to send the sound in the phone call. I have jack splitters (or duplicaters maybe idk), anyway I can double the sound coming from the piano, letting one to be heard from headphones, one to send in the phone call via the mobile phone.
The problem is, when I plug the cable between the digital piano and the phone, the phone handles the connection as a headphone is plugged, but I want it to recognize as a mic is plugged instead.
I don't know about how mic connections and headphone connections differ, but we all know that some headphones have also mic connection to the phone built-in. So there must be some way of making the output of the digital piano work as a mic connected to phone (making a custom cable maybe).
Any idea is appreciated, I don't know the basics of anatomy of jacks, headphone outs, mic connections, line outs, etc, I only use them.
Thanks so much