智能卡研发技术与工程实践

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

根据c语言编程知识的完美演绎-c programming language based on the perfect interpretation of knowledge

主要是通过应用程序对skype进行进程间常用功能的控制（如呼叫，挂接电话等），并且整合了PSTN电话功能（需相应的硬件）．实现了网络电话与传统的pstn电话与一体．-Mainly through the application of the skype feature commonly used to carry out inter-process control (such as call, articulated phone, etc.), and the integration of PSTN telephony functions (subject to the appropriate hardware). Realize the network with the traditional PSTN telephone call with one.

语音LPC压缩算法源代码（C语音）-voice compression algorithm source code (C voice)

贝叶斯滤波如卡尔曼滤波，粒子滤波等，给定一线性或非线性动态系统，用已知的观测数据和动态向量求后验概率。该资源是贝叶斯滤波器的C++类库，里面包括卡尔曼滤波（kalman filter）、粒子滤波（particlefilter）等。希望对想用C++实现滤波算法的同学有所帮助！

WCDMA物理层详解,对下行物理信道结构,上行物理信道结构以及信道间定时关系作了非常详细的描述.-Detailed WCDMA physical layer of the downlink physical channel structure, uplink physical channel structure as well as the timing relationship between channels given a very detailed description.

Making plain binary files using a C compiler,使用gcc得到纯二进制代码。讲的很不错，对学习c语言，了解编译器很有用。-Making plain binary files using a C compiler, gcc used to be pure binary code. Said very good, to learn c language, understand the compiler useful.

三种常用的串行通讯的编程方法，在VC++下调试通过。-three common serial communication programming, debugging through VC.

这是一个WINDOWS下的多串口驱动代码，非常方便好用，希望大家多多使用支持！-WINDOWS This is a multi-serial port driver code, very easy-to-use, I hope a lot of use in support of U.S.!

com通信，红外线-com communications, infrared