Disable or change audio ducking (lowering)? The audio ducking feature seems to let apps decide to lower its volume or pause playback while a notification from another app is playing.

Even though this feature is turned on by default, I am unable to find a way to change the amount by which the volume is lowered (similar to how this could be done on any decent OS for PC). Or to just disable this feature.

Most answers to this question on the internet have been utilizing the fallacy that you should mute the notifications if you don't want them to interrupt your playback (of let's say, music).

Obviously I do not need this accessibility feature. I can separate sound sources just fine. Last time I checked this is one of the basic cognitive skills that most humans possess, but maybe I have superpowers after all.

I think it is clear what I want to achieve. No messing with the audio levels unless I say so. A user that is in control, is a happy user. I want to be happy too :(

There is probably no setting to do this. Since I am a developer myself, I wonder if there is some hackish way to modify the default audio ducking volume to simply 100%? Or just using something similar to 'about:config' / windows regedit for Android?
Not sure on 8.1 .. but on 5.1 it's the following.   

1 - Sound &amp; Notification Settings > Interruptions


2 - Disable Interruptions on specific apps or all together