maximum sound level potential for motorcycles 摩托車的最高聲級(jí)
in this paper the train running noise level has been predicted with the theory of point sound source . the sound exposure level of a train set pass, equivalent continuous sound level and maximum sound level of a train set pass has been taken as estimate values, and some kinds of affixation attenuation on the course of noise propagation is considered, then the corresponding visual software has been developed . these make it convenient and precise to predict the noise level 本文從點(diǎn)聲源的理論出發(fā),對(duì)列車運(yùn)行噪聲進(jìn)行預(yù)測(cè)計(jì)算,采用一列車通過(guò)時(shí)的單發(fā)暴露聲級(jí)、時(shí)間特性的最大聲壓級(jí)和一定時(shí)間內(nèi)的等效聲級(jí)等作為噪聲評(píng)價(jià)量,并考慮了噪聲傳播過(guò)程中的各種附加衰減,編制了相應(yīng)的可視化軟件,使噪聲預(yù)測(cè)計(jì)算方便、準(zhǔn)確。