1)  combined signal processing with acoustic pressure and particle velocity
声压-振速联合信号处理
2)  acoustic pressure
声压
1.
The diesel engine's noise is measured by using the acoustic pressure method.
采用声压测量法对柴油机进行了整机噪声的测量,通过试验研究成功分离了发动机的燃烧噪声、机械噪声及进气噪声。
2.
Then,the optimal geometric design of the structure is performed for the reduction of the acoustic pressure at interested positions and frequencies using the feasible direction method in iSIGHT optimization program.
在此基础上,以结构厚度为设计变量,保持结构重量相对不变并以设计变量的上、下限为约束,以设计域点在各频率响应声压平方和的平方根为目标函数,对其进行了优化设计研究。
3.
By using the generalized finite element equation of cavity acoustic pressure with acoustic fluid-structural coupling,the numerical calculation for a practical example is conducted.
根据空腔声学的离散方程式，讨论了三维空腔的各种边界条件及其处理方法，运用流固耦合的空腔声压广义有限元方程，进行了实例计算，为空腔结构和振源分布的优化提供了依
3)  sound pressure
声压
1.
Sound pressure measurement for noise source Identification in engine;
发动机噪声的声压测量与分析
2.
The acoustic sources comprise an electronic sine wave generator or a loud speaker and a pneumatic diaphragm horn,by varying the frequency generated,sound pressure,air-to-cloth ratio and the filtering medium,the results have been achieved for reverse-air alone and reverse-air/sonic cleaning.
通过改变声波的频率、声压、气布比和滤袋材质，观察了单独反吹清灰和声波辅助反吹清灰的试验结果。
3.
An acoustic vector sensor(AVS) is combined with a traditional omni directional sound pressure sensor and dipole directional particle velocity sensor, which is applied to underwater acoustic measurement and acoustic detection.
声矢量传感器由传统的无指向性声压传感器和偶极子指向性质点振速传感器组成,被应用于水声测量和探测领域,但作为水声测量设备它会受到安装载体衍射声场的影响,使其接收声场失真和指向性发生畸变。
4)  noise suppression
噪声压制
5)  sound pressure level
声压级
1.
The fluidization behavior of 5-10 nm SiO2 and Fe3O4 particle mixtures was investigated in a fluidized bed of 56 mm diameter under different sound pressure levels and sound frequencies.
053 mm)为客体颗粒,在声压级为90~105 dB时系统考察了声场频率、声场强度和主客体颗粒不同配比关系对超细颗粒流化行为和聚团尺寸的影响。
2.
Through the spot measurement of the pump and downstream pipeline noise,and analyzing the spectrum analysis curve of sound pressure level and sound intensity level,this paper offers basis for the fundamental reason study of high vibration and noise,and puts forward t.
通过对泵及下游管线噪声进行现场测量,以及对各测点声压级谱分析曲线和声强级谱分析曲线的分析,为研究其振动和噪声高的根本原因、提出合适的改造方案提供依据。
3.
In″Panel Experiment″,two diagrams of sound pressure level vs.
本文以网络共聚物(蓖麻油/TDI+HEMA)为阻尼材料,对自由阻尼板作了噪声频谱分析,观察到在约千周以上频区,声压级较裸钢板有明显降低,对覆盖阻尼材料的钢条样品的内耗变频测量表明,内耗随频率而增加,说明自由阻尼板声压级的降低是由自身内耗随频率增大所引起。
6)  acoustic pressure distribution
声压分布
1.
The acoustic pressure distribution of the reactive muffler and the variation of transfer loss with frequency are obtained from a series of procedure, such as loading, solving and postprocessing.
ANSYS是一大型的通用有限元分析软件,其应用范围极为广泛 运用ANSYS软件对消声器声场进行了有限元分析,先建立抗性消声器的有限元模型,在此基础上通过加载、求解以及后处理等一系列的步骤对消声器进行计算分析,获得消声器内部的声压分布情况和传递损失随频率的变化关系,为消声器的优化设计提供依
参考词条
补充资料：分析信号处理
分子式：
CAS号：

性质：在分析信号中，常常混杂有噪声和其他的干扰信号，噪声和干扰信号不仅会引起误差，而且直接限制了分析方法的检出能力，须加处理。分析信号处理是通过对信号的平滑、滤波、积分、求导、变换等操作消除噪声和干扰信号的影响，可靠地检出所需要的分析信号，并以人们所需要的形式记录和显示分析信号的过程。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。