I’ve never really dug into this, but I’ve always “thought” that I could hear better when ambient air temperature is colder. Hunting first thing in the morning as the sun comes up on a cold autumn day for example. It always just seamed that I could hear things better than later in the afternoon.
But now that I’m thinking about this in response to reading the thread, I think there is some theory to support this thought. When you consider the speed of sound, it is rated at 68 deg F. The equation changes as the temperature changes or if the humidity changes. Also, sound travels faster in water than air. All this leads me to believe that a human being can hear better, or at least differently as the ambient temperature fluctuates.
I’ll be pondering this for a while……….