Compressing audio from Microphone.Start

Hi! I'm using microphone.start to register some audio from the users (about 30 seconds):

 //Start registration 
 audio.clip = Microphone.Start(null, true, 10, 44100); 
 //Stop registration 
 float[] data=new float[audio.clip.samples * audio.clip.channels];
 audio.clip.GetData(data,0);
 audio.Play();

My problem is... I need to upload the registered audio somewhere but the filesize is waay too big for the upload from a device like a telephone, I was looking for some wave (because if I'm not wrong a float array like that is tecnically a wave file) to .ogg because of the high compression rate and because the license thing of mp3s. I've searched a lot but can't find anything usefull.. Do you guys have any hint? Thanks!