Journal: Sensors (Basel, Switzerland)

Article Title: A Developed Jerk Sensor for Seismic Vibration Measurements: Modeling, Simulation and Experimental Verification

doi: 10.3390/s23125730

Figure Lengend Snippet: FFT analysis of a sample of the ( a ) accelerometer signal with its ( b ) amplitude spectrum, and ( c ) gyroscope signal with its ( d ) amplitude spectrum; signals were recorded at 60 (Hz) and 100% torque.

Article Snippet: The data samples were analyzed by the Fast Fourier Transformation (FFT) toolbox under MATLAB R2021a software to obtain the amplitude spectrum of the accelerometer and gyroscope signals in the frequency domain.

Techniques:

Journal: PLoS Biology

Article Title: Active Listening for Spatial Orientation in a Complex Auditory Scene

doi: 10.1371/journal.pbio.0040079

Figure Lengend Snippet: Shows setup for video and sound recordings of flight path and acoustic behavior of bats (b) capturing tethered mealworms (w) close to an echo clutter-producing plant (p). Two high-speed video cameras (c1 and c2) were mounted in the room to permit 3-D reconstruction of the bat's flight path in the calibrated space (c.s.). Video recordings were synchronized with audio recordings taken with ultrasonic microphones (m1 and m2) placed on the floor delivering signals to a digital acquisition system (IOtech WaveBook).

Article Snippet: Data acquired digitally with the IOtech WaveBook were displayed as time waveforms and spectrograms (256 point FFT) using MATLAB (MathWorks, Natick, Massachusetts, United States).

Techniques: