Your guess is a common perspective! The question of whether a falling tree makes a sound if no one is around to hear it is often used to explore deeper philosophical ideas about perception and reality.
From a scientific standpoint, when a tree falls, it produces vibrations in the air (sound waves), which would be classified as sound regardless of whether anyone is there to hear it. However, from a philosophical angle, some could argue that sound, as an experience, requires a perceiver.
Ultimately, both viewpoints can be valid depending on the context of the discussion!