Vibra ~ Oscillation Analysis in your Pocket
Vibra is for use in the structural engineering industry for measuring the oscillation of a structure and reporting if this is within a safe range. This tells you if a structure it sound or not. Specialised companies perform this service charging upwards of 20k. The app performs an FFT analysis on the raw iPhone accelerometer data to filter out the primary and secondary occulting frequencies.
For additional accuracy an external Bluetooth LE sensor can be used which is capable of recording at a higher frequency than the iOS.
Vibra was developed as part of the Wohnfühler project.
###Technical Details Technology: iOS, FFT, Signal Processing