system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does the wind make so many different noises?

Like whistling, howling... how come they all sound so different in terms of timbre and pitch?
gpt
Imagine it like the air blowing inside a flute: if you close or open more holes, the geometry of the tube changes. Therefore the air vibrates with a different frequency, thus creating a new note. 
Wind is similar, except that there are so many frequencies mixed together that it is unusual to actually hear a precise note. We typically hear different noises. They are many and they are different because the geometry in which they are developed changes anytime, and the direction of the wind changes too, creating even more variability.