Serial receive procedures. Through the Com port to receive information from othe...

音频/mpeg媒体类型

本文主要阐述了DTMF的原理及如何在MATLAB上产生DTMF信号，主要涉及到电话拨号音合成的基本原理及识别的主要方法，利用 MATLAB 软件以及 FFT 算法实现对电话通信系统中拨号音的合成与识别。并进一步利用 MATLAB 中的图形用户界面 GUI 制作简单直观的模拟界面。 能够利用矩阵不同的基频合成 0 － 9 不同按键的拨号音，并能够对不同的拨号音加以正确的识别，实现由拨号音解析出电话号码的过程，完成对电话拨号音系统的简单的实验仿真。-This paper described the principle and how DTMF in MATLAB to generate DTMF signals, mainly related to the telephone dial tone of the basic principles of synthesis and identification of the main methods, the use of MATLAB software and the FFT algorithm on the telephone communication system dial tone Synthesis and Recognition . And further the use of MATLAB in the production of graphical user interface simple and intuitive GUI interface simulation. Able to take advantage of matrix synthesis of different fundamental frequency 0- 9 different keys of the dial tone and be able to different dial tone to be the correct identification, the dial tone from a telephone number to resolve the process of completion of the telephone dial tone system, a simple experiment simulation

拨号服务器的服务器端代码，针对E5112设计，请与客户端代码配合使用-dial-up server to server-side code against E5112 design, and the client code used in conjunction with

vc++ 演示搜索本地可用串口，把本机上可以使用的串口号都列出来，在下拉窗口中可选，本程序是双串口互相通讯，测试串口设备，未完成主要功能。只完成了串口搜索

北邮的《通信原理》课件，希望对大家有所帮助-Beijing University of Posts and Telecommunications of the

利用TCPIP实现Chat功能的程序,分客户端程序和服务端程序。-use TCPIP achieve Chat function procedures, sub-client and server-side procedures.

提供了目前最全面的音频,视频的编码和解码库,包括G.711,G.726,AMR,MP3,H.261,H.263,MPEG-1,MPEG-2,MPEG-4,H.264,使用MMX汇编优化,效率非常高。可以直接加入到自己的工程中使用，非常方便。-provide the most comprehensive audio, video encoding and decoding library, including G.711, G.726, AMR, MP3, H.261, H.263, MPEG-1, MPEG-2, MPEG-4, H.264, the use of MMX compilation optimization, efficiency is very high. Can directly into their projects using very convenient.

BOrgTec GPSRS232 ActiveX Control提供如下特性：分析NMEA串，也就是说包含在NMEA序列里的数据将被提取出来。数据由ActiveX事件提供。NMEA序列从与PC串口连接的GPS接受器中获得。可以配置串口的参数，以与多种GPS接受器进行通讯。配置ActiveX Control显示数据的字体颜色和计量单位。这些特性使你在应用中加入GPS功能变得简单。适用语言：D5-BOrgTec GPSRS232 ActiveX Control provides the following features: Analysis of NMEA string, that is included in the sequence in the NMEA data will be extracted. Data provided by the ActiveX events. NMEA sequence from the PC serial port to connect with the GPS receiver gain. Serial port parameters can be configured to a variety of GPS receivers and communication. ActiveX Control to configure the font color display data and units of measurement. These features allow you to add in the application of GPS functionality simple. The application of the language: D5

在窄带Rayleigh快衰落信道下几种检测方法的误码率性能比较-In the narrow-band Rayleigh Fast Fading Channels Several detection methods of error rate performance comparison

AWGN channel. Uses a file called BPSK (containing BPSK voltage levels) and adds gaussian noise to it. The noise is generated by box muller equation. Note: BPSK file was generated from BPSK modulator source: BPSK.c