Why is it that an AudioSource cannot be set to have a volume greater than 1.0f? It seems like a reasonable thing to want to do. Am I missing something obvious?
I can make a custom rolloff curve that goes above 1.0f, and I can push AudioMixerGroups above 0dB. So why is there this limitation on AudioSource.volume?
(I’m using 5.4.3f1)
Not sure why either of those are allowed to go over 1, but the answer to the first question is just that 1 is the max Unity have given us.
Can you share a picture of the other 2 things?
actually, thats normal. db is not the same as the 0 - 1 volume. 1 assures that you do not blow your speakers or ears. its the max state a speakers membrane can have. and the lowest is -1. look at it as its a percentage to the movement a speakers membrane can make… probably not totally correct 
dB is a measurement of energy which has nothing to do with the above.
also about the curve going above 1, i dont think that really going to happen. it might show it, but either never really goes above 1, or there might be another volume controller involved which calculates an offset.