Some people, are just born with loud voices.
Both my kids, have TRUMPET voices.
Sure, they know what whispering is.
But their natural voices, are loud.
But in school, they are not loud.
They modulate their voices, per venue.
Me? Well I was born with a loud voice. Like my late Dad.
Oh well.
Sometimes I don't even know, I am talking loud. But my Husband tells me. It is so irritating.
Ugh.
I can't help it, all the time.
Kids, don't have perfect impulse-control over their voices.
My kids are so expressive... sigh.
As they get older, they will get better at modulating their voices.
Just teach him.
But don't expect perfection.
The person hearing it, is also.... either more sensitive to sounds or not.
So keep that in mind.
My Husband, (sigh) grew up in a library. Meaning, his house and Mom, growing up, was SO quiet. My house growing up, was full of talking and self-expression. My house is too... with my kids. I value... my kids being 'expressive' and able to voice, thoughts.
So, I take it with a grain of salt.