The audio begins with a pulsating, low-frequency hum, creating a sense of vibration, giving the impression of a deep, rhythmic heartbeat. As the pulsating sound continues, a swishing noise gradually overlays it, similar to the sound of a swift movement or shooting object passing by. This swish is not a singular occurrence but oscillates, repeating itself at regular intervals, creating a rhythmic interplay with the underlying pulse. The overall sound emits a science fiction vibe. It's unusual, and you could easily imagine it as a notification sound on an alien spaceship or some advanced technology device. The noise is complex, a confluence of throbbing and swooshing, vibrating and oscillating, making it feel somewhat weird yet intriguing. The audio ends leaving an after-echo of the throbbing swoosh, a testament to its powerful resonance.