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Field Test Data for Detecting Vibrations of a Building Using High-Speed Video Cameras

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Technical Report,01 Jun 2016,31 Oct 2017

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US Army Research Laboratory Adelphi United States

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The Acoustics Branch at the US Army Research Laboratory ARL collaborated with Booz Allen Hamilton, a government consulting firm, to conduct a field test that was designed to assess how high-speed video cameras can be used to detect sound. The team set up a low-frequency ServoDrive speaker inside of ARLs Building 108 facility. In this experiment, the speaker generated tones at 19, 28, and 37 Hz. A RED Scarlet Dragon Camera, Casio Camera, and Point Grey Camera were used to measure video of a vibrating door and window located on the building. In addition, a Polytech laser Doppler vibrometer, 3-axis Geophone, and 2 B and K microphones were stationed close to the building to collect ground-truth data. The field test and the data collected are documented in this report. The team developed image processing algorithms to analyze the results and successfully verified that the cameras and other devices correctly estimated the frequency of the tone generated at each trial.

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  • Photography

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