windows 如何实现变声器？
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How to implement a voice changer?
提问by
I want to write a app which change the microphone input voice and make it like robot or some funny man's voice.It must support send changed voice to all application like IM Software or Game Client. Which technology should I pick up? Windows WaveForm Api? DirectX? audio driver?
我想写一个改变麦克风输入声音的应用程序，使它像机器人或一些有趣的人的声音。它必须支持将改变的声音发送到所有应用程序，如 IM 软件或游戏客户端。我应该选择哪种技术？Windows WaveForm API？直连？音频驱动？
Thank you very much!
非常感谢！
回答by Noldorin
There's an MSDN Coding4Fun articlethat explains how to create a voice changer that operates over Skype, in C# (.NET). The full source code is also hosted as a project on CodePlex. In addition, it should be fairly easy do something else with the audio (as opposed to streaming it via Skype), since the project is based around the NAudioframework, which contains a good level of abstraction. Anyway, it is a reasonably complete (and stable) example - definitely worth checking out in my opinion.
有一篇 MSDN Coding4Fun 文章解释了如何使用 C# (.NET) 创建一个通过 Skype 运行的语音转换器。完整的源代码也作为项目托管在CodePlex 上。此外，使用音频做其他事情应该很容易（而不是通过 Skype 流式传输），因为该项目基于NAudio框架，其中包含一个很好的抽象级别。无论如何，这是一个相当完整（且稳定）的示例 - 在我看来绝对值得一试。
If you want/need to use C++ or some other language for development, then this project should at least give you some ideas about how to go about it. Still, if you can use .NET, then you're in luck I think.
如果你想/需要使用 C++ 或其他一些语言进行开发，那么这个项目至少应该给你一些关于如何去做的想法。不过，如果您可以使用 .NET，那么我认为您很幸运。
回答by ziggystar
Robot voice is often done with a ring modulatoreffect, mixing the voice with a sine wave - this is easier. Or use a vocodereffect, modulating the voice onto some other waveform, like rectangle - might be a bit more tricky. Go read up how the effects work, get a program with which you can check out how they sound (Audacity works for the ring modulator, finding and using a vocoder may be a bit harder). Then read how it's done or get a library which will do the processing for you.
机器人语音通常使用环形调制器效果完成，将语音与正弦波混合 - 这更容易。或者使用声码器效果，将声音调制到其他波形上，比如矩形——可能会有点棘手。去阅读效果如何工作，获得一个程序，你可以用它来检查它们的声音（Audacity 适用于环形调制器，找到和使用声码器可能有点困难）。然后阅读它是如何完成的或获取一个可以为您进行处理的库。
回答by the_drow
回答by billmcc
Now that's a neat idea, especially for a mobile app.
现在这是一个好主意，尤其是对于移动应用程序。
I'd probably start off-line by using a .wav file as input to get the effects working the way I wanted. You can use any high level language for this, but you probably want something that will map reasonably well into C/C++.
我可能会通过使用 .wav 文件作为输入来离线开始，以使效果按我想要的方式工作。为此，您可以使用任何高级语言，但您可能想要一些能够很好地映射到 C/C++ 的东西。
In terms of a production version, I'd go native and do this in C or C++. You want something fast for real time audio processing & I like to avoid dependencies on things like .net for distribution. (Not that I have anything against .net, it's great for servers and distribution within a company but I'm not so keen on having it as a dependency for shrink wrap software.)
就生产版本而言，我会使用本机版本并使用 C 或 C++ 来执行此操作。你想要一些快速的实时音频处理，我喜欢避免依赖 .net 之类的东西进行分发。（并不是说我反对 .net，它非常适合公司内的服务器和分发，但我不太热衷于将其作为收缩包装软件的依赖项。）
Windows DirectShow would be a tempting option - you could do some interesting effects with multi-media as well if you had the voice morpher implemented as a direct show filter.
Windows DirectShow 将是一个诱人的选择 - 如果您将语音变形器实现为直接显示过滤器，您也可以使用多媒体制作一些有趣的效果。
