Not that I am a casanova, more the opposite, but I had some relations in the past. I notices that there is a great difference between having a orgasm amongst them. At least the women I got involved and had sex with.
I never asked and I never got a good explanation for the differences in making vocal noise reaching the climax.
Once when I was a student there was that girlfriend who was screaming half the city awake. Several months later there was one girl who did not made a sigh.
I almost got the impression she died. Are there women or men who know more about that phenomenon?