In regular programming the intensity of sound varies over a large range.
在普通节目中,声音的强度在很大范围内变化。
The central meaning Shared by these adjectives is. Marked by or producing great volume and often disagreeable intensity of sound.
这些形容词共有的中心意思是。产生大音量和过分强烈的声音的,或有此特征的。
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。
Sound intensity measurement allows accurate identification, isolation and ranking of individual sound sources.
声强测量允许精确的鉴别、孤立、列举单个噪声源。
The space structure of the averaged sound intensity is discussed with this expression.
用这表式讨论了平均声强的空间结构的问题。
This paper briefly describes the present situation of sound insulation ways universally adopted in steel ball coal mill and the noise intensity released during operation.
简述目前钢球磨煤机普遍采用的隔声方式及其运行过程中释放噪声强度的现状。
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。
Conclusion la could participate in the modulation of auditory information in auditory cortex, influencing the sustained response neuron's encoding of the sound intensity message.
结论杏仁外侧核参与了皮层水平听觉信息调制,影响持续性反应神经元对声音强度信息的编码。
The large cross-section acoustic horn can transmit more power and higher intensity sound, therefore research on this kind of acoustic horn becomes more and more emergent.
大截面变幅杆能够传输更大功率更高声强的振动能量,因此对这类变幅杆的研究成为迫切需要。
Objective the variations of the site and shape of focal region for a concave spherical ultrasound transducer in the case of high sound intensity and stronger attenuation were studied.
目的研究凹球面超声换能器的声焦域在高声强和媒质有较大衰减情况下,其形状和几何位置的变化。
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。
The effectiveness of sound intensity has been analysed and the basis for precision acoustic measurement has been laid in this paper.
本文对声强测量的有效性作了较全面分析,为精确的声测量奠定了基础。
The even intensity and long duration of these murmurs reflect the large pressure difference across the orifice where the sound originates.
杂音的平均强度和长持续时间反映出声口压力差异很大。
This paper explores the feasibility of ultrasonic technology leading to produce fire-retardant wood and test conditions such as frequency, sound intensity and time etc.
探讨了超声波应用于木材阻燃浸渍处理过程的可行性,同时讨论了超声波试验参数频率、声强、辐射时间等的选择。
The noise power, sound intensity, sound pressure, vibration acceleration and corresponding time-frequency spectrum of 6480 driver axle surface were measured and analysed.
通过对6480型驱动桥的噪声功率、表面声强、表面声压、表面振动加速度以及相应的时频谱进行了全面、系统的测量和分析。
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。
In recent years, the technique of structural intensity has been an efficient means of solving sound and vibration problems.
结构声强技术是近年来解决噪声和振动问题的有效手段。
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。
All the lumber has the fine sound vibration performance, the difference of lumber sound vibration performance can the more directly reflect plate intensity difference.
木材都具有优良的声振动性能,木材之间的声振动性能的差别能较直接的反映木材强度差别。
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。
It is shown that it is the irrotational component of the active intensity that transfers sound energy in sound field.
在声场中真正传递声能量者仅是有功声强中的无旋分量。
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。
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。
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。
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。
Using the concept of complex sound intensity, we discuss in this paper the rotational character of the active intensity which is the real part of the complex sound intensity.
本文应用复声强的概念,讨论了复声强的实部即有功声强的有旋性质。指出:在声场中真正传递声能量者仅是有功声强中的无旋分量。
The noise characteristics of the idle bandsaw were measured with sound intensity method. The values of sound intensity, vector chart, contour chart and mesh chart of noise were obtained.
使用声强法对木工带锯机的噪声特性进行了测量,测得三面的声强值和噪声的矢量图、高线图、三维图。
The instrument adopts sorting circuit showed by sound and light, which bring high detecting speed, high efficiency and low intensity of work.
仪器采用声光指示的快速分选电路,使产品检测的测试速度快、劳动强度低,工作效率高。
The measurement of radiation noises from an underwater structure body and identification and location of noise sources were carried out by using a sound intensity measurement system .
通过用声强测量系统对水下大型结构体进行了辐射噪声声功率的测定以及噪声源的识别和定位的实验。
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。
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