The audio begins with the sound of a resonating and heavy knock echoing through the environment. It's clear that the knock is coming from a substantial, thick door, as the sound is deep and solid, not hollow or tinny. The pounding is forceful; each subsequent knock seems to reverberate louder and more insistently, creating a sense of urgency. There's an unmistakable intensity behind each knock that suggests a determined individual on the other side of the door. The knocking continues, the rhythmic pattern echoing into the silent surroundings, each strike on the door's surface adding to the suspenseful atmosphere. The audio ends leaving a lingering echo of the last knock, the silence afterwards almost as loud as the knocking itself.