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Vibration and sound signatures of human footsteps in buildingsa)
a)A portion of this work has been presented in Related Article(s): James Sabatier and Alexander Ekimov, “Vibration signature of human footsteps on the ground and in buildings,” J. Acoust. Soc. Am.118(3), 2021 (Year: 2005)

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10.1121/1.2217371
/content/asa/journal/jasa/120/2/10.1121/1.2217371
http://aip.metastore.ingenta.com/content/asa/journal/jasa/120/2/10.1121/1.2217371

Figures

Image of FIG. 1.
FIG. 1.

Setup for the measurement of human footstep vibration and sound.

Image of FIG. 2.
FIG. 2.

Footstep signature: (a) Fourier spectra of single footstep No. 6 of the acceleration, (b) the spectrogram of ten footsteps for the acceleration, (c) Fourier spectra of single footstep No. 6 of the sound pressure (the dashed line corresponds the line versus ), and (d) the spectrogram of ten footsteps for the sound pressure. The sampling rate was and the FFT size was 4096.

Image of FIG. 3.
FIG. 3.

Footsteps vibration signatures on the different floor coverings (carpet, linoleum, and linoleum with sand): (a) The signal in the time domain, (b) the spectrogram of ten footsteps, and (c) Fourier spectra of a single footstep on the carpet (3), linoleum (2), and on the linoleum with sand (1). The sampling rate was and the FFT size was 4096.

Image of FIG. 4.
FIG. 4.

Two phases of a foot motion in a single footstep: (a) Serial frames of the video record of a single footstep, and (b) and (c) are corresponding them the spectrograms of the acceleration and the sound pressure. Phase 1 (heel strike): The deceleration stage of the first foot (the signal is in the time range of ). Phase 2 (toe slap and weight transfer): The deceleration stage (toe slap) of the first foot (the signal is in the time range of ) and the acceleration stage (weight transfer from one leg to the other) of the second foot (the signal is in the time range of ). The sampling rate was and the FFT size was 512.

Image of FIG. 5.
FIG. 5.

(a) Time domain signal and (b) spectrogram of a single footstep for regular (1), soft (2), and stealthy (3) styles of walking (the sampling rate was and the FFT size was 512). (c) Spectra of a single footstep for regular (1), soft (2), and stealthy (3) styles of walking, and the background noise floor (4) (the sampling rate was and the FFT size was 4096).

Tables

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TABLE I.

Walking styles.

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/content/asa/journal/jasa/120/2/10.1121/1.2217371
2006-08-01
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Vibration and sound signatures of human footsteps in buildingsa)
http://aip.metastore.ingenta.com/content/asa/journal/jasa/120/2/10.1121/1.2217371
10.1121/1.2217371
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