I heard an owl

I was walking in my neighborhood yesterday and parked my Rollator in the shade of a tree to rest a bit while sitting across the street from a child day care center, and I heard an owl calling what I described in a text to a friend as "Who-wee? Hoo-hoo-hoo?"  I have no idea what kind of owl makes that particular sound, but it was repeated over and over, maybe five or six times while I took a break from walking.  Then it was gone.  I googled "owls in Saint Louis MO" and got this picture of a barred owl.  Maybe it was a bird like this illustration I found.