Classes of tonality of signals in the aspect of active elimination of tonal components

• Autorzy: Łuczyński Michał
• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to analyse various types of signals defined as tonal where energy is concentrated in a narrow band of the spectrum. Not all tonal noises could be reduced using narrowband active noise control systems with cancelling signal generated based on source parameters. The author proposes the following classes of tonality: periodical (e.g. sinusoidal) signals, sinusoidal signals modulated by random function, sinusoidal signals with increased/decreasing amplitude and/or frequency, a combination of the two previous ones, and narrowband noises. For each type of the analysed signals active elimination of the tonal component using synthesized cancelling signal was carried out. Depending on the type of the signals different results were obtained which indicates the need to clarify the definition of a tonal signal, or use not one concept of a tonal signal, but several classes discussed above.

Słowa kluczowe

EN

tonality; signal processing; Active Noise Control

PL

tonalność; przetwarzanie sygnałów; aktywna redukcja hałasu

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2019
• Tom: Vol. 30, nr 1
• Strony: art. no. 2019126
• Opis fizyczny: Bibliogr. 9 poz., 1 rys., wykr.

Twórcy

autor

Łuczyński Michał

• Wroclaw University of Science and Technology, Chair of Acoustics and Multimedia

Bibliografia

• 1. ISO 1996-2:2017, Acoustics -- Description, measurement and assessment of environmental noise -- Part 2: Determination of sound pressure levels.
• 2. S. M. Kuo, D. R. Morgan, Active Noise Control: A Tutorial Review, Chapter III. NARROWBAND FEEDFORWARD ANC, Proceedings of the IEEE, 87(6) 1999 943 - 973.
• 3. S. Ryu, Y. J. Park, Y.-S. Lee, Active Suppression of Narrowband Noise by Multiple Secondary Sources, Journal of Sensors, Volume 2016, Article ID 6276828, 9 pages.
• 4. X. Qiua, X. Lia, Y. Aib, C. H. Hansen, A waveform synthesis algorithm for active control of transformer noise: implementation, Applied Acoustics, 63 (2002) 467 - 479.
• 5. P. Górski, W. M. Zawieska, System aktywnej redukcji hałasu o przebiegu okresowym, Bezpieczeństwo pracy 9/2002, 5 - 6 (in Polish).
• 6. M. Łuczyński, S. Brachmański, A. Dobrucki, Active elimination of tonal components in acoustic signals, 2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), Poznan, 2018, 355 - 360.
• 7. Z. Engel, G. Makarewicz, L. Morzyński, W.M. Zawieska, Metody Aktywne Redukcji Hałasu, Chapter 8.9 Aktywna redukcja hałasu transformatorów energetycznych, Warsaw 2001 (in Polish).
• 8. M. Luczynski, S. Brachmanski, Mathematical Model of the Acoustic Signal Generated by the Combustion Engine, AES Convention: 142 (May 2017) Paper Number: 9717.
• 9. M. Łuczyński, Model matematyczny sygnału akustycznego generowanego przez silnik spalinowy (eng. Mathematical model of the acoustic signal generated by the combustion engine), Master thesis, Wroclaw University of Science and Technology, 2016.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).