voicechatAndRecording

能实现视频帧格式的选择，前一帧的播放，整个视频的文件播放(Can realize the video frame format of choice, before playing a frame, the video file playback )

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.)

说明：  C语言编写的MPG4解码程序，包括完整的解码及编码就结构，适合学习MPG4的相关数据结构及处理流程，(C language MPG4 codec procedures, including a complete decoding and encoding on the structure, MPG4 for learning the structure and the related data processing,)

根据数据文本转换成二进制文件再写成wave文件的格式转换保存成.wav文件、(According to the text data into binary files and then write wave files into a format conversion to preserve. Wav files,)

一款简单的VC++6.0编程MP3音乐播放器，附带源码已经工程文件。(A simple VC++6.0 programming an MP3 music player, already works with source files.)

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)

cfg video rec and mp4 3gp file play

说明：  用dxshow编写的视频播放器。。。。。。。(Dxshow prepared to use video player。。。。)

本程序为多媒体通信的server端的源码（ VC++ 6.0 以上版本）(the procedures for multimedia communications server side of the source (VC version 6.0 and above))

Fast Prediction Compensated Multiple Description Coding for JPEG 2000 The prediction compensated multiple description coding described in the following papers is implemented by modifying the OpenJPEG version of the JPEG 2000 standard: J. Wang, and J. Liang, "Filter banks for prediction-compensated multiple description coding,?submitted to IEEE Trans. Signal Processing, Sept. 2007. Revised: Aug. 2008. PDF J. Wang, and J. Liang, "Filter Banks for Prediction-Compensated Multiple Description Coding," accepted, 2008 Data Compression Conference, Snowbird, Utah, Mar. 2008. PDF http://www.ensc.sfu.ca/~jiel/