electret microphone

A robotic system for electret microphone soldering

用于焊接驻极体麦克风的锡焊机器人系统

A Design of Small Preamplifier for Electret Microphone

驻极体传声器小型前置放大器的设计

The electret microphone is a new microphone which is made with the electret material .

驻极体传声器是一种用驻极体材料制造的新型传声器。

The electret microphone tester is used to test electret microphone 's sensitivity and frequency response .

驻极体传声器测试仪是用来测试传声器的灵敏度及频率响应的。

This paper discussed the circuit model of a electret microphone and the conventional microphone preamplifiers .

分析了驻极体传声器的电路模型及其传统的前置放大电路。

The Performances of miniature electret microphone , the development status at home and abroad , and its applications are introduced in this paper .

本文主要介绍微型驻极体传声器的特点，国内、外发展概况及其应用。

This paper presents the methods for the heart sound acquisition used electret microphone , including the heart sound extraction project , principle , rules and the impedance conversion of microphone .

详细介绍了驻极体传声器在心音信号采集中的方法，包括心音信号提取的方案、原理、规则及传声器的阻抗变换问题。

There is a strong vibration signal as in operation of engine . The vibration signal is a weak stationary random signal , and it can be extracted by electret microphone .

柴油车采用压燃式，发动机在运转中伴随着较强的振动信号，该振动信号是一个弱平稳随机信号，可以利用驻极体传声器进行提取。

Shenzhen Xusheng Electronic co. , limited established in Feb.of2002 , now it is one of leading electret microphone producer with high technology , best quality , biggest production in the China .

深圳旭升电子有限公司成立于二00二年二月，现已成为国内技术领先、质量最佳、产量最大、服务最优的驻极体传声器专业生产厂家之一。

Piezoelectric acceleration sensor and the electret microphone has been deeply studied , compares their advantages and disadvantages , and selects piezoelectric acceleration sensor as the sensor of the measurement system . 3 .

对压电式加速度传感器与驻极体传声器进行了深入的研究，比较了两者的优缺点，确定了选择压电式加速度传感器作为整个测量系统的传感器的正确性。

Design of heart sound processing analog circuit based on the electret capacitor microphone

基于驻极体电容传声器的心音模拟处理电路的设计

Recognition of The Image Feature of Electret Condenser Microphone Using BP Neural Network

BP神经网络对驻极体麦克图像特征识别的研究

Research on the System for the Automatic On-line Visual Inspection of Electret Condenser Microphone

驻极体麦克风在线自动视觉检测系统的研究

Study on De-noising to Electret Condenser Microphone Image Signal

驻极体麦克质量检测中图像信号背景去噪研究

It also gives a safety design problem analysis using an electret capacitor microphone to pick-up the heart sound signals .

该电路涉及到放大、滤波、电平抬升等电路，并给出了安全设计问题，利用驻极体电容传声器来拾取心音信号。

The principle of electret condenser microphone and its noise are analyzed in the paper . It will be helpful to improve the electric specification .

本文对驻极体电容传声器的原理及噪声作了分析，这将有助于提高它的电特性。

The dissertation is based on the project of the System for Electret Condenser Microphone Performance Test , and adopts automatic visual inspection technology to solve the problem of micro volume accessory 's angle detection and polar recognition .

本文以驻极体麦克风在线综合性能测试系统为背景，采用自动视觉检测技术解决微小体积零件表面角度测量和正负极性识别的问题。

For acoustic positioning , computer sound card and ECM electret condenser microphone are adopted for acoustic signal receiving , and DirectSound is used for relevant analysis of the two signals and positioning their sources .

声音定位方面，采用计算机声卡和驻极体话筒进行声音信号的采集，并且依靠DirectSound控件，对两路声音信号进行相关分析，最终确定声源的方向。

As the dustproof material for electret condenser microphone , the nonwovens can not only prevent dust into microphone , but also provide the function of sound insulation and adjusting frequency response for microphone .

非织造布作为驻极体传声器极头防尘布，不仅起到阻挡灰尘的作用，而且具有吸声隔音、调节传声器频率响应曲线的功能。

On the basis of studying recognition method for image of electret condenser microphone , this paper presents an improved BP learning algorithm for recognizing the image features using neural network , and the method for adjusting momentum vector and learning rate is discussed .

在研究对驻极体麦克图像识别方法的基础上，本文提出了一种用改进的BP神经网络进行图像特征的识别和学习算法，并给出了动量系数和学习率的调整方法。

Fabrication and Analysis of Electret Backplate for Measurement Microphone

测量传声器驻极体背极的制作及分析

Some fabrication techniques about electret backplate for measurement microphone and the properties of electret have been measured and analyzed by high-temperature extrapolation are introduced in this paper .

本文介绍了测量传声器中驻极体背极的部分制作技术，并对驻极体材料的性能进行了高温外推测定和分析。

In combination with its excellent mechanical property , it is possible that ETFE is used as electret diagram of the electret microphone .

组合ETFE突出的力学性能，使其有望作为驻极体声传感器的储电振膜。

The article describes in experiments the characteristic of electret material in the processing of electret condenser microphone with grid-controlled constant corona charge , which gives valuable information for how to charge electret materials with steady and proportionable charges .

通过实验研究了栅控恒压电晕充电制备驻极体电容传声器中的驻极体材料的特性，对如何使驻极体带上稳定、均匀的电荷，提供了有价值的资料。