who adjust the baby's voice right at the highest volume?  

Hi not yet married so no question of children but still I can respond you scientifically. Actually the case is that we have different ways of communication, we can talk, we can shout, we can show our expressions, but children have only two ways of communication, either they show facial expressions which is very difficult to take note of if other people are sleeping so the only alternative is to cry and that too cry hard to gain attention so that someone can look into his problem.

Personally I always thought my babies were loud and others were so quiet and cute when crying. Odd how perception affects us. Realize that babies just want, pure and simple they want. They express it the only way they know how. Hope it goes better for you next time.