sound measurement

The Automatic Measurement System of Sound Level Meter Based on PULSE System

基于PULSE系统的声级计自动检定测试系统

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This paper presents sound characteristics of room sound field from architectural acoustics parameters and acoustics parameters and sound system characteristics and speech articulation. It gave definitions especially for the physical meanings and measurement methods on those characteristics.

从建筑声学参数、音质参数、声系统特性及语言清晰度参数四个方面介绍室内声场的声学特性，给出了这些特性的定义（物理意义）及其测量方法。

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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.

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Therefore the applications of the ray-parameter method to thin layers and the refraction method to hard layers need to be considered in an acoustic velocity measurement system composed of a sound source and a towed hydrophone streamer.

为此，有必要在一个由声源和拖曳水听器阵组成的声速测量系统中设置接射线参数法和折射法测量海底地层声速的处理功能。

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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

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The phase mismatch error is the main error source of sound intensity measurement system.

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.

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The influences of sound diffraction by a spherical shell on the measurement results and directivity of AVS were calculated by using the approximate equation of mechanical impedances of the thin spherical shell.

采用薄壁球壳机械阻抗近似公式，计算了球壳声衍射对矢量传感器声场测量和指向性的影响。

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A submerged buoy system for ocean vector sound field measurement is designed with the three-dimensional vector sensor as a core.

以三维矢量传感器为核心，构建海洋矢量声场观测潜标系统。

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Commonly used measurement techniques fall into two categories: oscillometric method as an indirect measurement is difficult to improve its accuracy; auscultatory method is expected to significantly improve the accuracy of automated blood pressure measurement, but the filtering and identification of Korotkoff sound is the main difficulty.

常用测量技术分为两类：示波法由于采用间接测量原理，其准确性难以提高；柯氏音法有望大幅度提高自动血压测量准确性，但是柯氏音的降噪和识别是难题。

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Since 2004, some basic data have been gained from the systematically measurement of a number of important national instrument' sound power level in reverberation room of South China University of Technology.

华南理工大学自2004年开始在混响室内对若干重要的民族乐器的声功率级进行了系统的测试，得到了民族乐器的部分基础声学数据。

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