Mapping Sound Pressure Levels: A Novel Approach to Determining Near-field and Far-field Regions

• Autorzy: Iliev Yordanov Iliyan , Karaivanov Hristo Zhivomirov

Identyfikatory

DOI

10.24425/aoa.2025.153657

• Języki publikacji: EN

Abstrakty

EN

The present study focuses on the spatial characteristics of the sound pressure level (SPL) generated by a circular piston (a circular-shaped acoustic transducer or loudspeaker). It presents a short theoretical review to aid in understanding the primary sound field characteristic – acoustic pressure – as a function of time, frequency, directivity angle, and distance from the source. The study introduces a simple and practical criterion for determining the near- and far-field boundary along the axis of the circular piston as a function of frequency. This criterion is validated through theoretical analysis and experimental measurements. Overall, the results show the influence of circular piston parameters on the SPL spatial distribution.

Słowa kluczowe

EN

sound pressure level; SPL; spatial characteristics; near-field; far-field; boundaries; criterion

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Polska Akademia Nauk
• Czasopismo: Archives of Acoustics
• Rocznik: 2025
• Tom: Vol. 50, nr 2
• Strony: 209--213
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Iliev Yordanov Iliyan

• Department of Information Technology, Nikola Vaptsarov Naval Academy, Bulgaria

• https://orcid.org/0009-0004-3338-3949

autor

Karaivanov Hristo Zhivomirov

• Department of Theory of Electrical Engineering and Measurements, Technical University of Varna, Bulgaria

• https://orcid.org/+0000-0002-6157-3772+

Bibliografia

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• 3. Iliev I., Zhivomirov H. (2015), On the spatial characteristics of a circular piston, Romanian Journal of Acoustics and Vibration Journal, 12: 29-34.
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• 5. Kleiner M. (2013), Electroacoustics, Taylor & Francis, USA, https://doi.org/10.1201/b13859.
• 6. Klippel W., Bellman C. (2016), Holographic nearfield measurement of loudspeaker directivity, Journal of the Audio Engineering Society, 141: 9598.
• 7. Kozień M. (2012), Acoustic nearfield and farfield for vibrating piston in geometrical and intensity formulations, Acta Physica Polonica A, 121: 132-135, http://doi.org/10.12693/APhysPolA.121.A-132.
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• 12. Shi T., Bolton J.S., Thor W. (2022), Acoustic farfield prediction based on near-field measurements by using several different holography algorithms, Journal of the Acoustical Society of America, 151(3): 2171-2180, https://doi.org/10.1121/10.0009894.
• 13. Stefanowska A., Zieliński S. (2024), Spatial sound and emotions: A literature survey on the relationship between spatially rendered audio and listeners’ affective responses, INTL Journal of Electronics and Telecommunications, 70(2): 293-300, https://doi.org/10.24425/ijet.2024.149544.
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• 15. Zhivomirov H., Iliev I. (2024), Mapping sound pressure level of a circular piston (supplementary material), Mendeley Data, V2, https://doi.org/10.17632/b89rhwhrrk.2.

Uwagi

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