Create/transfer compressed audio file

Mobile beeing the aimed devices i try to do the following:

1. Record Audio from Microphone. (becomes a *.WAV)
2. Upload file to a server (using "WWWForm.AddBinaryData")

I accomplished both of these but ... the audio file is a WAV.
This makes the files huge and the upload unneccessary long. Is there a way to compress the audio files using unity3d? i read a lot of documentation today and tested a little bit so i found out:

Unity does compress when importing files (MP3 since mobile)
When i click on a file in the editor, i can choose the import settings. And those settings would be PERFECT if i could use them during runtime on a saved file and re-save the outcome or send it....

I tried and tested a little bit with "GetAudioClipCompressed" but WWWForm either didnt accept it or had a warning that WAV file could not be streamed.

Can anyone help? Any ideas?
Is there maybe an Asset that can do this? Any workarounds? I really cant upload tens of MB of audio files ...


TL;DR:
Is there a way to:
1. Save a Microphone record as a compressed file?
2. Send a audio file compressed to a location?
3. Send compressed audio data to a location?

 

Is there really noone who knows how to solve this?

 

You wouldn't have happened to solve this some time in the past four years, have you? I'm working on something very similar at the moment.

 

This is a great tool for converting wav files to mp3
https://github.com/BeatUpir/Unity3D-save-audioClip-to-MP3/blob/master/README.md