Airplane sounds in videos reveal recording location
Original title: Pinpointing Location of Videos from Background Airplane Sounds
Analyzing Doppler curves from background airplane sounds, combined with public ADS-B flight data, can pinpoint where an otherwise unidentifiable video was recorded.
A technique uses Doppler effect on faint airplane sounds in audio recordings to determine location. ADS-B data from public flight tracking provides position, velocity, and altitude for aircraft. The method matches sound curves to known flight paths, making it possible to trace video origins.
- Doppler curves plot plane sound frequency changes
- ADS-B broadcasts position and altitude data publicly
- Technique works on unidentifiable recordings
From the original article
1 min read at schneier.comThis is fascinating: The video describes a technique that can reveal where an otherwise unidentifiable recording was made by analyzing its audio for the faint sounds of passing aircraft. The technique is both fascinating and frightening. It works by looking at Doppler curves, which plot the way a plane’s sound changes as it passes overhead because of the Doppler effect.
By Bruce Schneier · schneier.com
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