【摘要】 在对拖拉机驾驶室声学特性及噪声源进行分析的基础上，通过隔声、减振、吸声和控制部分噪声源等综合降噪措施，取得了降低驾驶员耳旁噪声１０．８ｄＢ（Ａ）的良好效果更多还原

【Abstract】 On the basis of the analysis of the acoustic characteristics of a tractor cab and contribution of main noise sources of the tractor to drivers ear noise, a series of multiple measures such as the sound insulation, the improvement of cab isolators, the sound absorption and the control of some noise sources, has been used to reduce the noise,and a good result of reduction of ear noise by 10.8 dB(A) was obtained.更多还原