sound power

Application of Kalman filter to measurement of sound power for medical ultrasonic diagnostic equipment;

Kalman滤波器在医用超声诊断设备声功率计量中的应用

Determination of scanning parameters during measurementon sound power of quadrupole source by scanning sound intensity method;

扫描声强法测量四极子声源声功率时参数确定

Application of acoustic fields reconstruction for sound power prediction

利用声场重构预估声源辐射声功率

Measurement of acoustic power of piston transducer based on calorimetry;

一种基于量热法的平面换能器声功率测量的方法

Determination of acoustic power on acoustic radiation modes;

基于声辐射模态确定声功率

The noise's acoustic power of above three noises are found and their contribution under different conditions are distinguished.

得出了在不同运行工况下发动机的燃烧噪声、机械噪声和进气噪声的声功率,并识别它们对整机噪声声功率的贡献度。

In measuring ultrasonic power of HIFU transducers, absorbing targets are often used.

在HIFU聚焦探头声功率测量中,常用吸收靶来进行声功率测量。

The results show that it has a deeper focal length,an ideal focal region and the changeable ultrasonic power.

该文应用坐标变换法对该聚焦换能器的复杂声场分布进行了数值计算,并测定了其声功率。

Effects of acoustic parameters of power ultrasound on wastewater treatment efficiency;

功率超声的声学参数对废水处理效果的影响

Appliance of power ultrasound in separation & purification;

功率超声在分离纯化中的应用

Effect of power ultrasound on induction of Stachys sieboldii leaf callus and growth of axillary bud;

功率超声对地灵叶片愈伤组织诱导和芽生长的影响

statistical sound power absorption coefficient

统计声功率吸收系数

Acoustics--Ultrasonic power measurement in the frequency range 0.5～10MHz

GB/T7966-1987声学0.5～10MHz频率范围内超声声功率的测量

Acoustics--Standard ultrasonic power source

GB/T14368-1993声学标准超声功率源

Determination of sound power level for noise emitted by woodworking machinery

GB/T3770-1983木工机床噪声声功率级的测定

Determination of sound power levels of noise emitted by household electrical appliances

GB/T4214-1984家用电器噪声声功率级的测定

SOUND INTENSITY DISTRIBUTION AND ACOUSTIC POWER OUTPUT OF A SOUND SOURCE IN REVERBERATION CHAMBER

混响室内声源的声功率输出及声强分布

Acoustics--Determination of sound power levels of noise sources using sound pressure--Survey method using a reference sound source

GB/T16538-1996声学声压法测定噪声源声功率级使用标准声源简易法

Acoustics--Determination of sound power levels of noise sources--Precision methods for anechoic and semi-anechoic rooms

GB/T6882-1986声学噪声源声功率级的测定消声室和半消声室精密法

Acoustics--Determination of sound power levels of noise sources using sound intensity--Part 2: Measurement by scanning

GB/T16404.2-1999声学声强法测定噪声源的声功率级第2部分：扫描测量

Acoustics--Determination of sound power levels of noise sources--Requirements for the performance and calibration of reference sound source

GB/T4129-1995声学噪声源声功率级的测定--标准声源的性能要求与校准

Determination of sound power levels of noise emitted by metal cutting machine tools

GB/T4215-1984金属切削机床噪声声功率级的测定

Determination of sound power level for noise emitted by reciprocating pump--Engineering method

GB/T9069-1988往复泵噪声声功率级的测定工程法

Determination of sound power levels of internal combustion engines noise-Quasi-engineering method

GB/T1859-1989内燃机噪声声功率级的测定准工程法

Determination of sound power level for noise emitted by centrifuger separator and filter - Engineering method

GB/T10894-1989分离机械噪声声功率级的测定工程法

Analysis of Acoustic Field and Power Radiated by an Electrical Machine

电机电磁振动辐射的声功率和声场分析

Research on Some Key Problems of the Measurement of Sound Power by Scanning Sound Intensity;

扫描声强法测量声功率的几个关键问题研究

Identification of Noise Sources on Air-conditioner Unit and Sound Power Measurement with Air-flow;

空调机噪声源识别与气流下声功率测量

The concept of" equivalent noisy power spectral density" is introduced in this paper.

文中提出等效噪声功率谱密度的概念。