All the ghostly sounds that are lost when you compress to mp3, by Jack Rusher

Right now, you’re probably listening to music on your computer. The source of that music — whether you’re listening to an mp3 file or streaming — is a compressed version of a file that was much more detailed, but way larger. It’s worth interrupting your music for a moment and asking: What sounds are you missing?
To get a sense, watch the video above, created by Ryan Maguire, a Ph.D. student in Composition and Computer Technologies at the University of Virginia Center for Computer Music, for a project called The Ghost In The Mp3. It’s a song made with only the sounds that were left out when compressing Suzanne Vega’s “Tom’s Diner” to mp3.
As his site explains,

“‘moDernisT‘ was created by salvaging the sounds lost to mp3 compression from the song “Tom’s Diner”, famously used as one of the main controls in the listening tests to develop the MP3 encoding algorithm. Here we find the form of the song intact, but the details are just remnants of the original. Similarly, the video contains only material which was left behind during mp4 video compression.”

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