ship noise

Objective: To observe hearing threshold shift ( TS) and its recovery in guinea pigs after their exposure to three high levels of ship engine noise.

目的：观察在3种高强度机舱噪声暴露下豚鼠的听阈偏移及其恢复过程。

The practical experiment of the target signal detection from the ship-radiated noise is done.

对实际舰船噪声进行了主动目标信号检测的实验研究。

Target Recognition of Ship Noise Based on Gray Model

基于灰色模型的舰船声信号目标识别

The noise had been so faint that no one thought that the ship had been damaged.

由于这个声音非常轻，没人想到船身已遭损坏。

Hidden Markov Models are introduced to the area of ship-radiated noise recognition.

将隐马尔可夫模型引入到舰船噪声目标识别中.

Floating raft system is widely used in the isolation and noise reduction of ship power equipment.

中间筏体为弹性体的双层隔振技术(浮筏),已经大量地应用在船舶动力装置的减振降噪中.

The noise indicators of ship include radiated noise, self noise, target strength and internal airborne noise.

舰船的噪声指标主要包括辐射噪声指标、自噪声指标、目标强度和舱室空气噪声指标。

According to the analysis, the three highlight model of longitudinal distribution of ship-radiated noise sources was proved: the section between the stern and the middle way of ship, midway of ship, and stern.

分析结果表明舰船辐射噪声沿舰船纵向的分布规律可以简化为三亮点模型，即中后部主机部分，中部辅机部分和尾部螺旋桨部分。

To study the cavitation mechanics and its relation-ship with noise characteristics of the valve-port high-speed flow, high-speed photography and noise spectrum analysis are applied to investigate the flow area and the related phenomenon inside the throttling area of valves.

为研究阀口高速流动中的旋涡空化机理及其与噪声特性的关系，运用高速摄像、噪声频谱分析等手段对典型阀口孔隙节流处的流场及流动现象进行分析。

Upbuild the signal model for ship noise, deduce the relationship between sound pressure and particle velocity in plane wave.

建立本舰噪声的信号模型，推导了平面波声场声压和振速的相关性。

This paper details the synchronous clock principle. Also described are the relationship between the noise level and the distance, the position of the target ship to the hydrophone and errors of distance measurement.

本文较详细的介绍了同步钟测距原理，并对在舰船辐射噪声测量中噪声组与距离关系，目标船相对测量水听器的位置，测距误差等进行了描述。

By the experiment of ship noise play back, influence on social behavior of the newborns by ship noise was tested.

采用船舶噪声回放试验，探讨了噪声对幼豚行为的干扰。