The audio begins with a sharp, clear whistle sound that gradually descends in pitch, creating an eerie, echoing effect. The whistle is accompanied by a phaser, adding a sci-fi or space-like quality to the soundscape. The distinct sound of a filter can be heard, altering the tone of the whistle and adding a sense of depth and complexity. The entire audio effect is imbued with a sense of warning, as if signalling an impending event. The reverb effect amplifies this sense of urgency, making the whistle sound like it's bouncing off the walls of a large, hollow space. The descending whistle, combined with the other effects, creates a unique, attention-grabbing audio experience.