sound intensity
声音强度
2026-03-22 10:36 浏览次数 18
声音强度
1. the intensity of a sound in a specified direction measured by the average rate at which sound energy passes through a unit area normal to that direction and commonly expressed in ergs per second per square centimeter
sound field intensity distribution场强分布
sound d intensity level声强级
sound intensity meter声强计
sound d intensity meter声强计
Sound Intensity Measurement声强测量
Sound d intensity声强
sound field intensity声场强度
sound vibration intensity声振幅
in this paper, the errors of sound power determination using sound intensity measurement are studied, based on the analysis of experimental results with the eyes of engineering application.
本文从工程实用角度出发,以实验分析为基础来探讨声强法测量声功率的误差问题。
firstly, the sound intensity signals were decomposed and recomposed by using wavelet packets.
建立了一个基于声强信号分析和组合神经网络的发动机故障诊断模型。
in chapter two, wave motion equation, sound energy, sound energy flux density, sound intensity and its scaling method and the theorem of two-microphone sound intensity have been introduced.
第二章介绍波动方程、声能、声能流密度、声强及度量方法、双传声器互谱声强测量原理。
the measurement of sound intensity can be applied to course detect, product research and development applications.
声强测量可以用于过程监测、故障诊断和产品研究与开发。
based on measuring the cross-spectrum density of sound pressure between two hydrophones, the facility for underwater sound intensity measurement is investigated and designed.
基于双水听器互谱测量法,研制的水声声强测量设备可用于测量水下声源产生的声场中任意点的声强量值或任意面上的声强量值分布。
this paper introduces the principles of sound intensity method and the application of the method to measure the noise of the fan.
该文介绍了声强法的原理和通风机噪声的声强测量方法,有一定实际应用价值。
the phase mismatch error is the main error source of sound intensity measurement system. it is difficult to eliminate this error only by upgrading the accuracy of instrument.
相位失配误差是声强测量系统的主要误差源,仅靠提高仪器的精度很难消除这一误差。
because the irrotational component of the active intensity depends on the surface sound intensity, measuring the surface sound intensity can avoid the effect of the rotation.
有功声强的无旋分量与表面声强有关,因此测量表面声强可避免有旋性的影响。
therefore, studying the sound intensity measurement theory and developing a real-time sound intensity measurement system which meets the situation of our country is very significant.
因此研究声强测量理论,并在此基础上开发一套适合我国国情的实时声强测量分析系统具有十分重要的意义。
objective to investigate the effects of sound intensity and frequency on phonatory stability.
目的研究声强和频率对发声稳定性的影响。
so the sound intensity technique will be a wide range of applied prospects in the low noise measurement of the small & special electrical machines.
因此,声强技术同样适用于微特电机等低噪声声功率级测定。
this paper discusses a sound intensity measurement system implemented on the ibm-pc.
本文讨论了在ibm—pc上实现的声强测量分析系统。
this method can accurately measure the sound intensity from coherent sources and high background noise.
该方法可以在声源间存在相干和高背景噪声的情况下,精确地进行声源辐射声强的测量。
by comparison of the measurement results of using sound intensity with those of the ordinary methods, confirms the precision and applied value of the measurement of sound intensity.
通过比较声强法与普通方法的测量结果,证明声强测量法在空调噪声测试中具有足够高的精度,有很高的实用价值。
system hardware circuit audio digital signal source achieve this functions:sound signals, sound intensity level control, data communications, liquid crystal display, alarm and power.
系统硬件电路包括音频数字信号源实现声音信号产生、数字声强级控制、多机数据通信、液晶显示和电源等模块单元。
in this paper, the sound power level of large turbogenerator in operating site is determined by means of sound intensity measurement.
本文用声强法在工作现场对大型汽轮发电机组中的发电机部分进行了声功率级测量。
it is possible that similar analysis can be expanded to cover the spatial gains for sound intensity processor, dual hydrophone optimal processor, vector hydrophone array etc.
类似地,声强处理器、双水听器最优处理器、矢量水听器阵的信号处理增益,都可以用信号处理的一般原理进行分析。
sound intensity of the anti-aging is very strong, and installed in the indoor humidity is such as to prevent an adverse environment.
音箱的抗老化强度方面非常强,而安装在户内更是能防止潮湿等恶劣的环境。
sound intensity is the sound wave intensity in sound field, which equals sound energy through the unit area perpendicular to the energy flow direction.
声强就是声场中的声波强度,它等于通过与能流方向垂直的单位面积上的声能量。
motorcycle; sound intensity measurement; noise control;
摩托车;声强测量;噪声控制;
the influence of the dft leakage errors on the sound intensity measurement is analyzed and the simulation examples are presented.
分析dft泄露误差对声强测量的影响,进行模拟计算。
with sound intensity method, major sources of the exterior vehicle noise are identified.
用声强法对车外噪声的主要声源进行了鑒别。
the sound intensity measurement is carried out for the exterior radiation noise of a medium bus and the major noise sources of the vehicle are identified.
对某中型乘用汽车的车外辐射噪声进行了声强测量试验,并在此基础上对该车的主要噪声进行了识别和研究。
sound intensity is vector, so it is meaningful to obtain 3-d sound intensity for identifying noise sources.
声强是矢量,因而获取三维声强对于噪声源识别具有重要意义。
the constitution, main functions and accuracy of two complex sound intensity analysis systems ready for popularization were discussed and some practical examples were given.
介绍了二套可供推广的复声强分析系统的构成、主要功能及精度讨论,并列举了若干应用实例。
then the paper puts up the modeling and designing of functions of noise analyzer such as noise spectrum analysis, sound intensity and so on.
进行了噪声分析仪的噪声谱分析、声强分析等功能的建模和设计。