国密算法的资料

对16bit的windowPCM声音压缩为pcm8的声音格式,压缩率约为50％.-16bit sound windowPCM of the voice compression for pcm8 format, compression rate is about 50.

echo cancellation source code

这是完整的代码和电路图 2 x 16 液晶 VU 表立体指标与 PIC16F877A。欢迎大家下载、试用。谢谢大家的支持！

本人收集的有关音频的加密文章，希望打搅喜欢-collection of the Audio encryption articles, like disturb

通过改变频率来改变音乐的音调，升调或降调都可以。另外还有移相（phaser.c)及反相(reverse.c)两个源程序文件-by changing the frequency to change the tone music, or transfer or demotion can. Another phase shifter (phaser.c) and RP (reverse.c) 2 source files

G.723的文档和实现-G.723 file and impliment

实现音频的source filter，里面用到rtp协议的东西。推荐-achieve audio source filter, which uses rtp agreement things. Suggest

WAV文件的处理程序， WAV文件的处理程序，-The processing of WAV files, WAV files deal with procedures,

AC97 CODEC 2.2 官方规范说明-AC97 CODEC official specification 2.2

sip 网管代理程序的堆栈的测试框代码，很经典，值得收藏。-sip Agent procedures stack test frame code, classic, worthy of collection.