Sound

Meaning

Wah-Wah

English - water,  Chinese Mandarin - doll
Ecuador and parts of Colombia (Tolima, Huila, and Leticia, Amazonas per my Spanish professor) - name of children
wa-nt, sound of crying....

Pa-Pa / Ba-Ba

Mama and Papa (Wikipedia)

Ma-Ma

Mama and Papa (Wikipedia)

ga-ga

Ga-d  ---> God

goo-goo

Good? - goo-goo (means penis in Chinese)

ya, yoh

Means yes in many languages / places
Yoh...heard this sound a lot in Finland I think.

ya-ya - grandma? or aunt

cool  /  coo-coo (cuckoo) (Ku - means crying in Chinese / Japanese?)

heheheh

Ra-Reh (Sun God Ra?), 

 HOt, TA-ng (Hot in Chinese, or Soup with tonal change), Dai-Dai (Retarded in Chinese) /

No

Na-Na

Ugh