The audio titled "Big Fan" begins with the faint, rhythmic sounds of what seems to be a large mechanical object in motion. The foley-enhanced audio dramatically brings to life the subtle pulsations of spinning fan blades. The rotation sound is consistent, suggesting a fan in good working condition, spinning ceaselessly. It's a rich, immersive soundscape that subtly shifts between the whirring and whooshing of the fan blades slicing through the air. As the audio progresses, the listener can almost feel the generated breeze and the cooling effect it brings, transporting them to a space dominated by the commanding presence of a big, powerful fan.