I'm searching for a method that can convert sound to voltage.

I have a .wav format file. The .wav file format is 16bit and 44kHz sampling rate.

I want to play the .wav file on my PC and convert PC wav data to voltage and see the electric signal on an oscilloscope.

[![fg1. concept](https://i.stack.imgur.com/cHHDg.png)](https://i.stack.imgur.com/cHHDg.png)

Is there another method to convert sound to voltage?

Does the aux connector have + and - pin?

If aux connector has Vcc,Gnd pins, must it have a voltage amplifier?