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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

使用DELPHI实现文本文件显示和声音同步播放-use DELPHI text documents and voice simultaneously broadcast

在屏幕上显示音量控制信息 调用Core Audio APIs 适应于vista win7-This sample uses the Core Audio APIs to implement an on-screen display that shows volume changes to the output stream that plays through the default audio-rendering endpoint device. The on-screen display appears when the user adjusts the volume level in the Windows volume-control program, Sndvol.exe, and it disappears after the volume level remains unchanged for a short period.

VC++写的可以控制系统音量的程序，可以设置快捷键。-VC++ Writing system can control the volume of procedures, you can set shortcuts.

说话人识别基于 mfcc 和 dtw 这技术用来寻找不同的声音多大岁数我们可以很容易找到确切的声音从这次行动。

给PCM添加WAV文件头的VC代码，能把PCM格式的文件通过添加WAV文件头的方式，转换为WAV文件，供微信应用等直接播放

利用Visual C++实现了音频数据信号采集，可以显示波形、可采集传感器等非音频信号，能够实时显示等。对于数字媒体专业利用VC学习有很大的入门引导作用。-The use of Visual C++ implementation of the audio data signal acquisition, can be displayed waveform can be collected sensors and other non-audio signals, real-time displays. For digital media professionals to learn the use of VC has a great entry-guiding role.

上传个VC++写的简单CDPlayer，对初学者有一定的参考价值-From a VC++ to write a simple CDPlayer, for beginners has some reference value

检测生卡例子程序-detection procedures examples Health Card

delphi下驱动声卡发声的程序,可以发出任意频率和幅度的声音.-delphi audible sound card drivers under the procedures can be issued arbitrary frequency and amplitude of the voice.