FFmpegSDLVideoPlayer

从一个mpeg4视频文件中，抓取给定起始结束时间段内的图像，保存为jpeg格式，使用directshow实现(From a mpeg4 video file, the crawl a given time period starting the end of the image, save it as a jpeg format, the use of DirectShow realize)

内含服务端和客户端，服务端开启后，客户端可以与另外一个客户端进行语音录音，也可以进行广播，类似网络会议(暂不支持视频).适合想了解多媒体编程和网络编程的初学者.(Includes server and client,when server opened, the client can chat with another client also record voice, you can also broadcast to all client online, similar to the network meeting (not support video). Suited to people who want to know multi-media programming and network programming.)

语音识别，通过说话转化为语音。适合开发语音软件(good it‘s so worth that you must have a look)

做一频谱分析处理，为滤波提供频率(Spectrum analyzer to do one deal, in order to provide frequency filtering)

该程序为多媒体定时技术，通过该程序可以实现某函数的周期调用(The program for multimedia timing technology, the program can be achieved through the cycle of a function call)

简易多媒体播放器,vb语言编写~~可以播放MP3音乐文件(media player)

光立方的一个用于显示动画和音乐频谱的源码，实现的动画种类很多，详见源码内的注释。(A light cube is used to display the spectrum of the source animation and music, many implementations of animation types, detailed source notes inside.)

该程序是我为公司写的放音录音程序,并可以在界面上显示动态波形(The program is I wrote to the company put the sound recording program, and dynamic waveform can be displayed on the interface)

EM8471神龙卡源代码,支持MPEG4,AVI等硬件格式播放.(EM8471 SHENLONG card source code, support for MPEG4, AVI format players and other hardware.)

基于短时能量和短时过零率来实现语音端点检测。也称为双门限比较法，是一种传统的 语音端点检测方法。现在已经有研究人员提出若干其他更加高效和有效的检测方法，但 是这个方法不失为一种最简单的方法，可以通过程序来获得语音端点检测的感性认识和 体会。内的程序读取WAV文件，程序附有详细的使用说明和注释，以及若干测试用的语音文件。(Based on the short-term and short-term energy to achieve zero rate of voice activity detection. Also known as dual-threshold comparison method, is a traditional method of voice activity detection. Researchers now have made a number of other more efficient and effective detection methods, but this method may be one of the most simple way to get through the process of voice activity detection and the experience of perceptual knowledge. Procedures within the WAV file to read, procedures with detailed instructions and notes, as well as the voice of a number of test documents.)