This is the first time I have ever heard my own voice.

5 seconds sound clip from the Congo (1995) movie soundboard.

You can hear this line at 00:12:26.604 in the Blu-ray version of the movie.

Quote context

[...]

- When we started out, it was so simple. Communication. That's what separated human from animal. Speech.

- And for those humans who had a physical impairment which inhibited speech, sign language. An alphabet in gestures, words in motion.

- Then came virtual reality. Sensors, at first cumbersome, worn like clothing, could read and replicate the body's movements.

- Professor Arliss Wender at MIT, the first scientist to apply this technology to sign language.

- Our subject today, William, was born without the organs of speech. Isn't that right, William?

- That is absolutely right.

- This is the first time I have ever heard my own voice.

- Lights, please.

- It's hard to get grants for what I do.

- Most people just don't really believe it. They think it's a parlor trick, a gag. But it's no gag, ladies and gentlemen.

- And with this new technology, I can demonstrate it in a way in which it has never been possible to demonstrate it before.

[...]