vocalize

Short definition from Wiktionary

Verb

1. 1
   To express with the voice, to utter.
2. 2
   To produce noises or calls from the throat.
3. 3
   To sing without using words.
4. 4
   To turn a consonant into a vowel.
5. 5
   To make a sound voiced rather than voiceless.
6. 6
   To add vowel points to a consonantal script (e.g. niqqud in Hebrew)