As the audio titled "Space Heater" begins, the steady hum of a heater fills the air, creating a comforting white noise that blankets the listener. The heater's rhythmic mechanical thrum is unchanging, consistent, and steady, giving a sense of warmth and coziness. The sound of its operation is constant, forming a relaxing background noise that could easily lull one into a state of calm or even sleep. The noise isn't intrusive, but rather it fades into the backdrop of your consciousness, providing an ambient sound that is subtly soothing. It's the sort of noise that one might hear in a tranquil room on a chilly day, with a space heater softly whirring away to combat the cold.