I came across this lv2 that simply records audio.
As it’s an lv2 it could be inserted as an effect, so you could record dry audio then send it on to a reverb. By default it records to ~/~/lv2record/lv2_sessionX.<wav/ogg>
I could hear the monacle in my mind. The plugin compiles and appears as an Audio Effect very easily. UI works, can be midi mapped.
2 Likes