Influence of velocity on the frequency spectra of SMA 11 road surface measured by CPX method
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44994575%3A_____%2F25%3A10002445" target="_blank" >RIV/44994575:_____/25:10002445 - isvavai.cz</a>
Výsledek na webu
<a href="https://online.obd.cz/id_publ/2447" target="_blank" >https://online.obd.cz/id_publ/2447</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Influence of velocity on the frequency spectra of SMA 11 road surface measured by CPX method
Popis výsledku v původním jazyce
Noise affects the health of the citizens. Its primary source is transport, especially road transport. Road noise is primarily caused by the vehicle's combustion engine, the contact of the tyre with the road surface, and airflow around the vehicle (depending on the vehicle's velocity). In cities, the most common noise is noise generated by the contact between the tyre and road surface, so-called tyre/road noise. The close-proximity (CPX) method is one of the most objective ways of measuring road surface noise. It uses microphones mounted near the reference tyre so the surrounding environment can't affect the measured noise values.This paper presents the results from measurements of the reference asphalt surface using the CPX method at the different velocities using all six microphones. The third-octave band spectra for individual microphones were analyzed. The highest differences in trend lines are achieved at frequencies below 1000 Hz. The most significant differences of up to 5.8 dB(A) between the noise spectra values of individual microphones were found at the highest measured velocity for low frequencies.
Název v anglickém jazyce
Influence of velocity on the frequency spectra of SMA 11 road surface measured by CPX method
Popis výsledku anglicky
Noise affects the health of the citizens. Its primary source is transport, especially road transport. Road noise is primarily caused by the vehicle's combustion engine, the contact of the tyre with the road surface, and airflow around the vehicle (depending on the vehicle's velocity). In cities, the most common noise is noise generated by the contact between the tyre and road surface, so-called tyre/road noise. The close-proximity (CPX) method is one of the most objective ways of measuring road surface noise. It uses microphones mounted near the reference tyre so the surrounding environment can't affect the measured noise values.This paper presents the results from measurements of the reference asphalt surface using the CPX method at the different velocities using all six microphones. The third-octave band spectra for individual microphones were analyzed. The highest differences in trend lines are achieved at frequencies below 1000 Hz. The most significant differences of up to 5.8 dB(A) between the noise spectra values of individual microphones were found at the highest measured velocity for low frequencies.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
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OECD FORD obor
20104 - Transport engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/CK04000058" target="_blank" >CK04000058: Zohlednění dalších vlivů promítajících se do naměřených hodnot hlučnosti povrchů vozovek při dynamickém měření</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů