play wave and record wave

该文档帮助大家理解WebRTC 中音频处理中AEC模块流程，在理解FFT的基础上，可以通过该帮助文档，进一步改善源代码，以便达到更好的效果，解压后，其中文档使用word 2007以上版本打开。

喜其运行的代码的不同多种音频文件的采样率转换的采样率 感谢

用C语言实现的wav文件的播放，采样，解压，和传输-Using C language to achieve the wav file playback, sampling, decompression, and transmission

改变原始wav音频信号的抽样频率，并且显示处理前后声音信号的频谱.有助于帮助大家理解奈圭斯特抽样定理。-Change the original wav audio signal sampling frequency, and shows the spectrum of sound signal before and after treatment. Helps to help you understand the Nyquist sampling theorem.

使用vc实现了winamp的歌词显示插件,vs2005,vc6下编译通过.其中实现了显示歌词,自动匹配歌词,读取id3标签,指定目录搜索,过滤关键字,网站下载歌词功能展示了winamp gen类插件编写技术,并同时使用了拦截消息自绘窗口技术,winsocket http轻量级连接下载技术.-use vc realized the unusual lyrics show plugin, vs2005. vc6 under compile. which realized the lyrics, automatic matching lyrics read id3 labels, the designated directory search, keyword filter, download lyrics display function of decoding plug-gen preparation of technical categories, while the use of intercept information from the painted window technology, lightweight connecting winsocket http download technology.

rt_lpc is a light-weight application that performs real-time LPC analysis and synthesis. It features the following: real-time LPC analysis real-time LPC synthesis visualization of original, predicted, and error waveforms visualization of vocal tract shape from LPC coefficients adjustable LPC analysis order adjustable synthesis pitch shift MIDI controlled pitch (hit m ) lots of other choices (pitch pulse source selection, emphasis filter) STFT plot modular LPC library available on MacOS X, Linux, and Windows under GPL part of the sndtools distribution

在PalmOS下的一个录音功能的软件,速度快,声音的质量非常好-In a sound recording under PalmOS software, fast, very good sound quality

It is a mp3 decoder,based on the decoder of Intel-It is a mp3 decoder. based on the decoder of Intel

一个动态链接库，在其中定义了一个类，功能是录音、播放等。所使用的函数是API函数。-A dynamic link library, in which the definition of a class, function is recording shows. Function is used by API functions.

能实现1Hz~50MHz间的频率测量，显示信号周期，能实现1Hz~15KHz间的信号波形实时显示，采样速率120KHz。-1Hz ~ 50MHz to achieve inter-frequency measurements show that the signal cycle, to achieve inter-1Hz ~ 15KHz real-time display of signal waveforms, the sampling rate of 120KHz.