How did uhn-uh come to mean “no” and uh-huh come to mean “yes” in English?

Question

Pretty much the title. Also curious if other languages have similar non-word sounds for negation/affirmation.

In: Other

Answer 1

This has no backing and is a personal theory. It’s about the feeling behind the sound. Excited sound sounds higher pitch. The huh part of the uh huh goes up in pitch where uh uh sounds lower and slower and less willing to do so.

Think on body language. You don’t wanna do something, low toned groan with physical drooping.

Excited and ready, higher pitch squee or yay with physical alertness.