How do you compress MicroPhone datas in script?

Unity Engine
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1

Hi, I am trying to record voices using MicroPhone for real-time communication. I have achieve the recording and transfering. BUT the size of data is TOO BIG. I have to transfer 640k bit data with only 10s audio clip.

After days of googling, I learn that I got PCM format through AudioClip.getData(). Some compressed format like ADPCM, GSM 610, G.722, G.723.1, G.729a, IMBE/AMBE, ACELP can be used for real-time transfering. But I didn’t find any code or library to encode and decode data in script.

Does anyone know how to achieve this?
Thanks.

2

Thanks to NSpeex.
My simple demo here: GitHub - osblow/SimpleAudioCompression: A simple in-memory audio compression with NSpeex, based on Unity3D.