http://write.flossmanuals.net/kdenlive/an-introduction-to-audio-editing/#:~:text=To%20adjust%20audio%20level%20of,the%20Volume%20(keyframeable)%20effect.
http://write.flossmanuals.net/kdenlive/an-introduction-to-audio-editing/#:~:text=To%20adjust%20audio%20level%20of,the%20Volume%20(keyframeable)%20effect.