Humming noise from a ruler

The audio begins with a soft, yet distinct humming noise, which is instantly recognizable as the vibration of a ruler. The sound is peculiar, even slightly bizarre, and quite unlike the typical noises we encounter in our everyday lives. The ruler, when flicked, emits a series of rapid, almost pulsating vibrations that create this unique humming sound. The noise wavers, oscillating between different pitches, producing a somewhat eerie, resonating hum that echoes subtly, drawing attention to its unusual nature. The vibration grows louder, then softer, in a rhythmic cadence, adding to the strange allure of the sound.