20.500.12556/RUL-169444 Application of spectral immission directivity for long-term environmental noise measurements Environmental noise pollution is a growing problem, especially in urban areas where multiple noise sources contribute to a complex acoustic environment. Conventional noise measurement techniques often struggle to distinguish individual sources and their contribution to the overall noise level, requiring extensive post-processing. This study introduces spectral immission directivity (SID), an advanced approach that integrates spatial and spectral data to improve the assessment of environmental noise. SID enables the identification of dominant noise sources in real time by capturing both their directional and frequency characteristics. The proposed method has been evaluated through numerical simulations and controlled experiments in an anechoic chamber, demonstrating its ability to distinguish individual noise sources and their spectral contributions with high accuracy. By using directional frequency analysis, SID provides a more detailed representation of the acoustic scene while minimizing the need for manual classification. The results show that SID increases measurement accuracy, especially in environments where multiple sources overlap in terms of operating times and frequency content. The results suggest that SID can be a powerful tool for environmental noise monitoring that complements existing methods, from standardized compliance measurements to classification models and smart urban monitoring networks. spectral immission directivity long-term environmental noise measurements microphone array sound source localization spatial filtering 1/3 octave frequency analysis true false true Angleški jezik Ni določen Članek v reviji 2025-05-28 15:12:56 2025-05-28 15:13:15 2025-12-04 04:39:07 0000-00-00 00:00:00 2025 0 0 15 str. Vol. 239, art. 110848 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 534 0003-682X 10.1016/j.apacoust.2025.110848 237558019 Murovec_..._Application_of_spectral_immission.pdf Murovec_..._Application_of_spectral_immission.pdf 1 6BC3ED38749F620371BE7F981868CFE9 3103686f98307ca1bb3997cb6c33dddff2910a363701547251851d43c391ddab 7e692361-3bc4-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210804 RAZ_Murovec_Jure_2025.pdf RAZ_Murovec_Jure_2025.pdf 1 B2BE22DE561EC9B5DAF0E1E318333783 499217315675bb2c01cbab5a21628202529d55873f310690487ef421be28d584 3f020d94-d048-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=222946 https://www.sciencedirect.com/science/article/pii/S0003682X25003202 0 978ff684-3c89-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210881 Fakulteta za strojništvo 0 0 0