How to lip sync with a servo (SOLVED)

Hello, i'm quite new to arduino and am stuck on my project. I'm planning to make a box that uses a servo to open and close its "mouth" but is timed with singing such as if it says "hi" it would open its mouth when the word is said and then close it. If anyone can help that would be Great! :smiley:

Who/what is saying "hi"? Where does the "hi" come from?
Do You have a "hi" detecting sensor?

You can modulate the β€˜mouth’ up and down whenever an analog input is present.

If the amount of movement is random, then anyone watching will see the movement and their brain will think things are in sync.

larryd:
Thank you so much this can really help me!