I heartily recommend this great Blog by Pediatrician Claudia Gold: CHILD IN MIND -
PROMOTING CHILDREN'S MENTAL HEALTH THROUGH RELATIONSHIP BASED INTERVENTIONS
Dunstan Baby Language – Learn the Meaning of Your Baby’s Cries
The Secret Language of Babies: (This article is adapted from WikiParenting)
In 2006, musician Priscilla Dunstan released a DVD titled , "Dunstan Baby Language – Learn the Meaning of your Baby’s Cries". The DVD promises to help frustrated parents unlock the meaning in their infant's cries. Oprah featured Priscilla Dunstan on her show. Watch the clip to be amazed!
(Here is the link to her site if you wish to get additional information or to buy the DVD )
According to Dunstan, it's easiest to recognize the words if you listen during what Dunstan calls the "pre-cry" stage, before your baby is hysterical. If you hear more than one word, act on the word you hear most. You may need to shift your baby's position (sit her up on your lap, for example) and try to listen for the distinctive part of each word. Dunstan says there is no one sound that's harder to hear than others because it varies by individual and some babies use some words more than others.
There's a little bit longer video to explain it here, too:
I’m Hungry: “Neh”
This is the noise made when a baby pushes his tongue to the roof of his mouth because he wants to eat. "Neh," is an infant's sucking reflex with sound added to it.
I want to burp : “Eh”
When a bubble of air is caught in your baby's chest, the sound the baby makes as he tries to push the air out is "eh”. Burp your baby if they make this type of cry.
I'm tired: “Owh”
”Owh” is an audible yawn. When making this sound, the baby's mouth forms an oval shape.
I'm having discomfort: “Heh”
This is the noise made when a baby is responding to a skin reflex. It signals irritation such as sweating, a wet diaper or itchy clothing.
I have gas: “Eaire”
If a baby can’t push out his burp, it moves through the baby's digestive system and "eaire" is the sound he makes as the muscles of the intestine and stomach tighten to force the air bubble out.
THANKS, Priscilla Dunstan!