Capturing Sound From The Zapruder Film
Sun 31 Aug 2014, 12:36 pm
I found this article interesting in that it suggests that sound can detected on film.
http://www.theregister.co.uk/2014/08/05/boffins_turn_passive_objects_into_visual_microphones/
The faster the film the better the results but they were able to discern signals as low as 60fps.
Basically it works like this:
“When sound hits an object, it causes the object to vibrate,” says Abe Davis, a graduate student in electrical engineering and computer science at MIT and first author on the new paper. “The motion of this vibration creates a very subtle visual signal that’s usually invisible to the naked eye. People didn’t realize that this information was there.”
This video gives examples.
More can be read here:
Extracting audio from visual information.
http://newsoffice.mit.edu/2014/algorithm-recovers-speech-from-vibrations-0804
It got me thinking that one day (hopefully not too far away)the Zapruder film might yet reveal the shots through information we cannot yet see.
http://www.theregister.co.uk/2014/08/05/boffins_turn_passive_objects_into_visual_microphones/
The faster the film the better the results but they were able to discern signals as low as 60fps.
Basically it works like this:
“When sound hits an object, it causes the object to vibrate,” says Abe Davis, a graduate student in electrical engineering and computer science at MIT and first author on the new paper. “The motion of this vibration creates a very subtle visual signal that’s usually invisible to the naked eye. People didn’t realize that this information was there.”
This video gives examples.
More can be read here:
Extracting audio from visual information.
http://newsoffice.mit.edu/2014/algorithm-recovers-speech-from-vibrations-0804
It got me thinking that one day (hopefully not too far away)the Zapruder film might yet reveal the shots through information we cannot yet see.
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