There are many possible explanations for hauntings, not least that humans are highly suggestible creatures, especially when we want to believe. But some ghost sightings might actually be the result of sounds — sound waves that vibrate just below our range of hearing, dubbed the “fear frequency.”
We conduct our daily lives against a soundtrack of incessant background noise. But the nature of that noise is changing in the digital age. And sound design — the way we engineer recorded audio — is changing with it.
Vi Hart, the soothing voice behind stop motion science-y explanations, is back at it again. In her latest video, she's showing you sound. Yup, she draws, annotates, illustrates, plays notes and visualizes every little nit and grit there is to know.