Depending on the amount of data to process, file generation may take longer.

If it takes too long to generate, you can limit the data by, for example, reducing the range of years.


Download file Download BibTeX


Comparison of acoustic, electric and laser contactless displacement measurements applied to observe nonlinear behaviour of diaphragm movement in dynamic loudspeakers


Year of publication


Published in

Vibrations in Physical Systems

Journal year: 2023 | Journal volume: vol. 34 | Journal number: no. 2

Article type

scientific article

Publication language


  • dynamic loudspeaker
  • nonlinear distortion
  • laser displacement sensor

EN Dynamic loudspeakers introduce distortion into reproduced auditory signal, especially in case of operation with high power or low frequency. Assessment of distortion by measuring current of voice coil should allow to compensate or prevent the product of distortion. The paper contains a comparison of displacement capture by optical triangulation displacement sensor, acoustic signal acquired using microphone, voltage and current. In case of processing low frequency signals, acoustic signal captured by microphone is dominated by harmonics of the fundamental frequency, and the laser displacement sensor provides more accurate information about the diaphragm displacement. Harmonics recorded in current have the same character as the displacement signal for low frequency, but for frequencies above the resonance, acoustic signal is a better source of displacement information.

Pages (from - to)

2023203-1 - 2023203-12





Article number: 2023203

License type

CC BY (attribution alone)

Open Access Mode

open journal

Open Access Text Version

final published version

Full text of article

Download file

Access level to full text


Ministry points / journal


This website uses cookies to remember the authenticated session of the user. For more information, read about Cookies and Privacy Policy.