Move to the AudioWorklet API?

[Mihonarium]

As mentioned by @Termplexed,

One issue of course is that the recorded media has same volume-level as the playback. E.g. if it is low or muted, recording is also low or muted. Not sure, but ideally would be to get the buffered audio and extract a sample from that (I.e. no recording) but not sure how to achieve that.
Another alternative could perhaps be to use AudioWorklet
https://developer.mozilla.org/en-US/docs/Web/API/AudioWorklet