Not gonna lie, that sounds more like a drafty basement and a good imagination. Recordings can pick up all sorts of sounds and our brains are wired to find patterns, even when there's nothing there. Maybe look for a reasonable explanation before jumping to conclusions?

Sooo, we're just gonna ignore the monks who painstakingly hand-copied books before Gutenberg huh? The press made things easier and cheaper, sure, but it's not like people were stumbling around in the dark before. Just saying.