Have you ever lived near a mountain river?
In my youth I had to live a couple of months in the Caucasus at an altitude of 1500 m in the valley of the river Laba.
When we arrived there, the noise of the river overwhelmed all the other sounds in the valley. To say something, I had to scream in my throat. I thought that the cranes: either we will squeeze everything, or we will shake our throats, or both.
Two or three days passed. It turned out that birds are singing here, cycades are striking, there is no need to roar at all, and the noise of the river is heard only if you listen specifically.
More experienced comrades in mining explained that it is the brain itself, beyond our will, filters out the constant useless noise, not carrying information.
So, dear women, don’t be offended that your husband doesn’t hear your vocal flow.
Nothing personal, only physiology.