Learn how to say Vocalizing correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word vocalize:
1utter (a sound or word):
the child vocalizes a number of distinct sounds
a warbler vocalized from a reed bed
express in words:
Gillie could scarcely vocalize her responses
[no object] Music sing with several notes to one vowel.
2 Phonetics change (a consonant) to a semivowel or vowel.
3write (a language such as Hebrew) with vowel points.