loudadj.大声的；吵闹的；引人注目的adv.大声地；响亮地loudness control响度控制loudness density响度密度loud heart sound心音亢进loudness pattern等响图,响度图loudness balance响度平衡loudness-leveln.响度级loudspeaking set扬声电话机loudness analyzer响度分析仪loudness contours等响线loudness level LL响度级