system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What happens that causes our voice to sound "old" when we're 70+ years old?
gpt
As we age our vocal cords and surrounding muscles start to wear out which results in a change of pitch and adds extra vibrations making our voices sound more rough. You can think of a new guitar string compared to an old stretched out, worn, or frayed guitar string.