How to stream raw data from web audio into webrtc data channel - webrtc

I use getUserMedia to the the audio stream, and pass the stream into web audio using createMediaStreamSource. I then want to stream the raw audio data into a webrtc data channel.
There isn’t a data channel destination node in web audio. I’ve only been able to access the raw audio data from inside an audio worklet, but I don’t know how to get that data into a data channel. How should I go about streaming raw audio from getUserMedia data into a data channel?

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