数字语音采集和频谱分析外文翻译

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梦色未央 2016-06-03 00:00:00

数字语音采集和频谱分析 Digital voice acquisition and spectrum analysis 数字语音采集和频谱分析 Digital voice acquisition and spectrum analysis

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数字语音采集和频谱分析外文翻译:

怎样用mutlab做语音信号采样和频谱分析:

外文翻译《建筑的组成部分》: StructuralSystemstoresistlateralloads这篇外文的作者是谁我想知道他的作者是谁... Structural Systems to resist lateral loads 这篇外文的作者是谁我想知道他的作者是谁展开

毕业设计外文翻译，高手请进，感激不尽！: ResearchonIntegrationofCoalMineMonitoringandControlSystemwithFieldBusControlSystemAbstract:AccordingtotheconstructionofcurrentcoalminemonitoringandcontrolsystemsinChina，t... Research on Integration of Coal Mine Monitoring and Control System with Field Bus Control System Abstract:According to the construction of current coal mine monitoring and control systems in China，the paper proposes three kinds of applicable schemes of integrating PLC and DCS systems with field bus technology to digitize the system and to improve the flexibility and extent of the system.Essentially，the paper introduces the integration of FCS on I/O layers.Based on a real coal mine safety-monitoring and control system applied with a CAN field bus，the major technology of system relays and extensions is discussed.We believe that one of the most applicable methods is currently replacing the connection between function-stations and field-sensors with a CAN bus on I/O layers for system integration. Key words:monitor and control;field bus control system;CAN;integration 1 Coal Mine Monitoring and Control System and Field Bus Technology As one of the most important methods to improve modern management and production efficiency in coal mines，monitoring and control technology have been widely adopted to maintain safety in coal production.Taking advantage of foreign technologies from the 1980’s，coal mine monitoring and control systems have expanded rapidly in China.At present， automatic control has come into use in most large-scale coal mines，which greatly improved production efficiency and safety and lowered costs. In China，most sub-systems of coal mine systems work independently.They follow a DCS system structure of three layers(center layer，sub-station layer and sensor layer)which consists of a tree to-pology.They are composed of sensors，sub-stations on or under the ground，center stations，multiple controllers and display terminals(Fig.1).They work with analogue signals of 4–20 mA or 200–1000 Hz. Each coupled cable can only act as one line for transmission[1]. Currently control networks have been developed for digitalization and networking.Because traditional analogue signals of 4–20 mA or 200–1000 Hz can only carry simple measurement information and con-trol signals，the communication rate is restricted. Therefore，it is necessary to digitalize and network the entire monitoring and control system. Fig.1 Traditional Structure of Coal Mine Monitoring and Control System 展开

基于单片机的气体传感器的外文翻译。要来自外文期刊。: 论文需要。求各位大神帮忙。感谢感谢！小的跪下了

怎样用matlab对语音信号分解及频谱分析？:

求善良的人帮我翻译一篇外文感激不尽: t treatment， seeding by 3 wt%ZrO2 as glass-composite and pulverization affected the amount， size and distribution of crystalline phases. SEM-EDS and XRD results revealed that crystalline phases presented in the devitrified glass–ceramic ... t treatment， seeding by 3 wt%ZrO2 as glass-composite and pulverization affected the amount， size and distribution of crystalline phases. SEM-EDS and XRD results revealed that crystalline phases presented in the devitrified glass–ceramic were barium aluminate (BaAl2O4)， barium aluminosilicate (BaAl2Si2O8) possibly with boron associated in its crystal structure， and barium zirconate (BaZrO3). CTE of the devitrified glass–ceramic was in the range of (10.1–13.0) 106 C1. Good adhesion was obtained both in the cases of glass and devitrified glass–ceramic with YSZ and AISI430 stainless steel. Interfacial phenomena between these components were discussed. 2008 Elsevier B.V. All rights reserved. 1. Introduction Solid oxide fuel cells (SOFCs) are a power source producing electricity via an electrochemical reaction. SOFCs have high energyconversion efficiency [1] and are environmentally friendly due to their low pollutant emission [1–3]. Electrochemical reactions in SOFCs occurred at the temperature range of 600–1000 C and required both oxidizing and reducing atmosphere [4]. Planar SOFCs are a type of SOFCs under development. An important consideration in planar SOFCs fabrication is hermetic sealing of all SOFC components， which are solid electrolyte， metallic interconnect， anode and cathode [5]. The seals must be thermochemically and mechanically compatible with other SOFC materials， should have high electrical resistance， and must be stable and long time durable under operating condition under H2 and H2O atmosphere [4，6]. Rigid sealing using glasses or glass–ceramics is a promising option 展开

外文文献基于MCU的信号发生器做毕业论文外文翻译用的，谢谢了，:

基于MATLAB采集语音信号分析与处理: 要求： 1、语音信号采集录制一段课程设计学生的语音信号并保存为文件，要求长度不小于10秒，并对录制的信号进行采样；录制时可以使用Windows自带的录音机，或者使用其它专业的录音软件，录制时需要配备录音硬件（如麦克风），为便于比较，需要在安静、干... 要求： 1、语音信号采集录制一段课程设计学生的语音信号并保存为文件，要求长度不小于10秒，并对录制的信号进行采样；录制时可以使用Windows自带的录音机，或者使用其它专业的录音软件，录制时需要配备录音硬件（如麦克风），为便于比较，需要在安静、干扰小的环境下录音。 2、语音信号分析在MATLAB软件平台下绘出采样后的语音信号的频谱图。 3、含噪语音信号合成在MATLAB软件平台下，给原始的语音信号叠加上噪声后，绘出噪声的信号频谱图. 4.设计一种合适的滤波器，去除噪声，得到原始的语音信号. 有哪位可以为我提供MATLAB源程序，多多感谢了!!! 展开

超声波测距仪外文翻译在哪个网站能找到:

快速fft采集音频信号，如何进行频谱分析: 用单片机采集音频信号，将音频信号进行傅立叶转化后存在一个数组内，那然后怎么处理这些数据呢，才能得到对这个音频信号的进行频谱分析呢，想知道它是不是失真了，，请各位大侠帮助!!!

matlab中语音信号DSB调制与解调频谱分析，见图: 左边是语音信号，右边是语音信号跟cos(2*pi*9000)相乘得到调制信号，为什么中间看起来还有直流分量。

谁有关于污水处理或者组态软件的外文翻译（带原文），急用！:

用MATLAB对语音信号做时域和频谱分析。要求有详细的程序，谢谢了。: 我的毕业论文是基于MATLAB的语音信号的滤波器的实际和实现，我的语音文件在E:\MATLA\work\hnist.wav我想知道时域分析，频域分析。他们分别实现的程序。答的好的追加分。

要写工控组态软件的毕业论文包括开题报告、外文翻译，怎么写？:

如何采用matlab对单片机采集的数据进行频谱分析？: 我用单片机采集到电动机的振动信号，并通过ad转换器转换为数字信号。但是，这些数字信号如何移植到matlab中，进行频谱分析？

基于EWB的函数信号发生器的设计谁有想过论文还有外文翻译:

谁有基于LabVIEW的信道编码系统的设计外文翻译文献综述急需:

语音交换机和网络交换机有什么区别???: 语音交换机和网络交换机有什么区别???如题，谢谢... 语音交换机和网络交换机有什么区别??? 如题，谢谢展开

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