Should chat audio be encrypted before sending it?

Should chat audio be encrypted before sending it?

I'm creating a small web game using three.js, and I'd like to add voice chat functionality to it. Currently, the audio information is converted into base64 client-side and then sent to the server from where it's sent out to all other clients.

I have pretty much no knowledge or experience when it comes to information security, so I'd like to know if audio data like this counts as sensitive information and should be encrypted/obscured in some way before sending it.