【摘要】 基于"噪声源-传递路径-接受点"的系统分析法提出一套简化的船舶舱室噪声工程预报方法,沿空气声和结构声两条路径计算噪声能量的传递和衰减,再结合房间常数计算接收点的舱室噪声声压级。将该方法应用于某小艇舱室噪声预报实例,计算得出的A计权声压级与实测值误差小于3dB,验证了该方法的有效性。更多还原

【Abstract】 A simplified engineering prediction approach for shipboard cabin noise is put forward based on so-called system approach. By using source-path-receiver analysis, noise transmission and attenuation are considered in both air-borne and structure-borne paths to calculate sound pressure level in receiver room with association of room constant. This approach is applied to predict air-borne noise level in a simplified two-cabin model. The discrepancy between the results from prediction and measurement is less than 3dB, which shows both feasibility and validity of this approach.更多还原