The audio begins with the soft, echoing sound of a hand making contact with a smooth, cold metal surface. It's clear that it's a door knob, round and solid in the palm of the hand. There's a faint rustle as the hand tightens around the knob, a sense of anticipation building. Then, the distinct, unmistakable sound of the metal mechanism within the door turning. It's a satisfying, resonant click as the latch is disengaged. Following this, there's a gentle creak, the sound of the door beginning to swing open on its hinges. The echo suggests a large, open space beyond. The sound fades, leaving a sense of completion and the feeling of an open, welcoming space now accessible.