船舶辐射噪声信号的航行声特征仿真方法研究  

On the Simulation of Ship Radiated Noise Signals'Navigation Feature

作　　者：郑援[1] 杨刚[1] 何宪文 ZHENG Yuan;YANG Gang;HE Xianwen(Navy Submarine Academy,Qingdao 266199,China)

机构地区：[1]海军潜艇学院,山东青岛266199

出　　处：《电声技术》2020年第6期98-100,103,共4页Audio Engineering

摘　　要：在船舶辐射噪声信号静态仿真基础上,研究并给出一种通过声强和谱分布变化仿真船舶航行声特征的方法。对静态仿真得到的连续谱和线谱合成信号按时间进行分段,对每段信号的各频率点,依据船舶航行过程分别进行基于水声传播损失的强度调整,并对调整后的各段信号进行合并,再利用调制谱进行最后的信号调制。仿真结果显示,生成的船舶辐射噪声信号具有船舶航行引起的声强、频谱变化声特征,并在人耳听觉上平滑、自然。The simulation of ship radiated noise signals'navigation feature is investigated.Based on the static simulation,a method is provided to generate the navigation feature for the simulated ship radiated noise through the variation of total intensity and spectral distribution.The statically simulated continuous spectrum and linear spectrum signals are divided into segments in the time domain at first.For each segment and each frequency point,the intensities are adjusted according to the acoustic transmission loss formula and then merged.At last,the modulation process is conducted.The simulation experiment results show that the simulated ship radiated noise signals can exhibit the acoustic feature originated from the navigation of the ship,and are also smooth and natural in auditory sense.

关 键 词：船舶辐射噪声 航行 声特征 信号仿真 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程] TN912.3[自动化与计算机技术—控制科学与工程]