Power spectrum and filtering

Andreas Skiadopoulos, Nick Stergiou

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Scopus citations


The Fourier transform is at the heart of many engineering disciplines, including human movement biomechanics. The major focus of this chapter is to introduce concepts related to the discrete Fourier transform. In biomechanics, human movement is captured as analog signals and evaluated usually as digital signals. Linear and angular kinematics, kinetics, and electromyographic data should be treated like any other digital signal. The Fourier transform is the alpha and the omega in biomechanical data collection and digital signal processing. Students of biomechanics must understand the basic concepts of digital processing in order to be responsible users of commercial equipment and software.

Original languageEnglish (US)
Title of host publicationBiomechanics and Gait Analysis
Number of pages50
ISBN (Electronic)9780128133729
ISBN (Print)9780128134405
StatePublished - Jan 1 2020


  • data sampling
  • digital filtering
  • Fourier transform
  • noise
  • smoothing
  • spectral leakage
  • time series

ASJC Scopus subject areas

  • General Engineering
  • General Biochemistry, Genetics and Molecular Biology


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