I remember this film very well and it made a great impression on me.
Indeed, when my very much wanted (and four years to manage to become pregnant) first baby arrived - I was totally paranoid about everything to do with him. One night, after feeding him, bathing him and putting him to sleep - I was disturbed that he did not seem to respond when hubbie came into the room. Remembering that film, we slammed the door shut, then banged a tray down in the room. Little Iain slept blissfully through it all. I was distraught and had him tested for deafness. of course, there was nothing wrong with his hearing, just sleeping 'like a baby'.
I can also remember the film about Helen Keller.