"Contact" Strange Sound Coming From Starliner!

A crewman aboard the Boeing Starliner reported hearing strange sonar-like sounds emanating from a speaker inside the craft. While the exact cause of these noises remains unknown, the audio was shared online, leading to a wide of reactions. I couldn't help but think of the movie, "Contact". Thus, this video. The noise coming from the craft's speaker sounds a lot like submarine sonar or like someone is knocking on the craft from the outside.