Algorithm for detection of wave packets in a circular waveguide

• Autorzy: Wrzeciono Piotr , Szymański Michał , Bayat Hydayatullah

Identyfikatory

DOI

10.21008/j.0860-6897.2024.1.11

• Języki publikacji: EN

Abstrakty

EN

This paper presents an algorithm for detecting wave packets in a circular waveguide. The waveguide terminated with a concrete plug was used to test the method. The concrete was made in accordance with the Eurocode standard. During the tests, a significant difference was observed between the behavior of the speaker and the concrete plug. The pulse reflected from the plug maintained its shape regardless of the sound level. The reflection of the pulse from the speaker's diaphragm resulted in a significant change in the form and duration of the wave packet. These changes were dependent on the sound level of the wave packet. As a result of these modifications was a significant difference between the measurement uncertainty of detecting a pulse reflected from the concrete and the speaker. In the case of reflection from the speaker, an uncertainty of 0.036% was obtained. The smallest measurement error value for the pulse reflected from the speaker was 2.5%.

Słowa kluczowe

EN

wave packet; detection; waveguide; dispersion; speaker; concrete plug

PL

paczki falowe; wykrywanie; falowód; dyspersja; głośnik; korek betonowy

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2024
• Tom: Vol. 35, nr 1
• Strony: art. no. 2024111
• Opis fizyczny: Bibliogr. 15 poz., 1 il. kolor., wykr.

Twórcy

autor

Wrzeciono Piotr

• Institute of Information Technology, Warsaw University of Life Sciences, Nowoursynowska 159, bud. 34, 02-776 Warszawa, Poland

• https://orcid.org/0000-0003-3433-3906

autor

Szymański Michał

• Institute of Information Technology, Warsaw University of Life Sciences, Nowoursynowska 159, bud. 34, 02-776 Warszawa, Poland

• https://orcid.org/0000-0002-0830-5963

autor

Bayat Hydayatullah

• Institute of Information Technology, Warsaw University of Life Sciences, Nowoursynowska 159, bud. 34, 02-776 Warszawa, Poland

• https://orcid.org/0000-0003-1057-6030

Bibliografia

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• 2. J. Prisutova, K. Horoshenkov, J.-P. Groby, B. Brouard; A method to determine the acoustic reflection and absorption coefficients of porous media by using modal dispersion in a waveguide; J. Acoust. Soc. Am., 2014, 136(6), 2947-2958; DOI: 10.1121/1.4900598
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• 12. PN-EN ISO 10534-1:2004; Acoustics - Determination of Sound Absorption Coefficient and Impedance in Impedances Tubes - Part 1: Method Using Standing Wave Ratio, 2004
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• 15. W. Klippel; Tutorial: Loudspeaker nonlinearities - Causes, parameters, symptoms; Journal of the Audio Engineering Society, 2006, 54(10), 907-939; http://www.aes.org/e-lib/browse.cfm?elib=13881

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).