Application of COM technology in the design of the software for virtual Sound Level Meter;
COM技术在虚拟式声级计软件设计中的应用
Study on testing L_(eq) function of the sound level meter with step wave method;
阶梯波法测试声级计L_(eq)功能的研究
Conventional sound level meters generally use precision ceramic microphones and discrete solid state circuitry or integrated circuit operational amplifiers,and a set of standardized frequency weighting filters,standardized exponential time weighting circuits,logarithmic amplitude detector,and a display in decibels capable of measuring the RMS averaged sound level and other specifications.
在常规的噪声测量中普遍采用声级计,传统的声级计一般是利用硬件计权网络实现对噪声信号的计权,利用硬件的滤波网络实现噪声的倍频程分析以及给出平均声级等。
The paper introduces a kind of new method of measuring modal parameters and mode of vibration of the circular saw blades by means of the acoustics principle and a non-contact mode sound meter sensor, it belongs to upper veracity,reliability and engineering application value.
介绍一种采用声学原理,利用非接触式声级计传感器实测圆锯片模态参数和振型的新方法,具有较高的准确性、可靠性和工程应用价值。
This paper presents the hardware design of the digital sound meter based on the digital signal processor(DSP).
采用数字信号处理器DSP设计了数字声级计的硬件系统,阐述了数字声级计设计原理及系统设计方案,对组成系统的各芯片的功能进行了详细说明,并阐明了如何利用它们实现ADC接口设计、存储器接口设计和电源设计。
The dual-channel electroacoustic test system can be applied to measure sound-signal frequency response of sound meter according to IEC 61672-3:2006 Eletroacoustics-soungd Level Neters-Part 3:Periodic Tests.
同样也可按IEC61672-3:2006将它作为连续频率的声校准器,测量声级计的声频响。
Integrating-averaging sound level meters
GB/T17181-1997积分平均声级计
" Electric,sonic properties and measuring methods for sound level meters"
GB/T3785-1983声级计的电、声性能及测试方法
The Design and Research of the Engine of Digital Sound Level Meter;
数字声级计（DSLM）引擎设计与研究
Remote Measurement and Control System of Sound Level Meter Based on Embedded Web Server
基于嵌入式Web的远程声级计测控系统
Random-incidence and diffuse-field calibration of sound level meters
GB/T17312-1998声级计的无规入射和扩散场校准
The Simple Explanation of Uncertainty Evaluation in the Calibration Procssing of Sound Level Maters
浅谈声级计校准过程中的不确定度评定
The technique to design large digital sonar system using cascade link array processors
用级联阵列机构造大型数字式声呐的设计技术
A three-stage,low-noise amplifier in frontend of radar receiver
一种接收前端三级低噪声放大器的设计
There are also instruments known as noise meters which measure this level directly.
还有一些可以直接测出声强级的仪器，叫做噪声计。
Calculation and application of zero order optical diffraction efficiancy for ultrasonic standing wava Bragg modulator
超声驻波布喇格调制器零级光衍射效率的计算及其应用
Design and Measurement of a Column-Level Reset-Noise-Suppression Circuit for Global Shutter CIS
CMOS图像传感器列级全并行像素复位噪声抑制电路的设计与测试
To raise in condition, rank, or esteem.
提高地位，级别，声望
measured noise level [MNL]
量度所得的噪音声级
passive advanced sonobuoy
被动式高级声呐浮标
A-weighted equivalent continuous sound pressure leve
Ａ加权等效连续声压级
Conclusion The workplace can be classified by equivalent consecutive sound level A.
结论噪声作业可以用等效连续A声级来进行分级。
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