Read scanned text aloud from a Mac document camera

Use Text to Speech on the Present view, then Play Audio to hear the recognized words.

Text to Speech recognizes the Present view, then Play Audio speaks it. Copying that text without speaking is a separate step. This is not a system-wide screen reader for other apps.

Read aloud

Open Present. Frame the page. Choose Text to Speech and start recognition.
When the text panel opens, choose Play Audio.
Pause or stop when you are done. Optional: export the audio if the panel offers it.

Install Vizo from this website.