Effect of Diction in Seasonal Change

Read the following excerpt from a fictional narrative:

"With each passing day in the quaint village, the whispers of autumn crept into the air, bringing with them a crispness that crackled like fire underfoot. The trees, once lush and emerald, now began to don their stunning cloak of russet and gold, as if the earth had decided to paint a masterpiece that would soon fade to gray. Children played among the fallen leaves, their laughter ringing brightly, unaware of the chill that hinted at winter’s arrival."

In this passage, the author employs specific diction and syntax to evoke the essence of the changing seasons. What is the primary effect of the author's use of the word "whispers" in the context of this passage?