使用 .NET Framework 捕获麦克风音频流

问题描述

我需要从我的应用程序中的麦克风捕获输入流，该应用程序是用 VB.NET 编写的.我需要能够将此数据流式传输到文件或通过 HTTP 并可能使用 LAME MP3 对其进行编码.有人可以帮我开始吗?

I need to capture the input stream from a microphone in my application, which is written in VB.NET. I need to be able to stream this data to a file or over HTTP and possibly encode it using LAME MP3. Can anybody help me get started with this?

谢谢！

推荐答案

如果你想要一个 .NET 解决方案，你可以查看 NAudio 这是一个开源音频库.查看WaveInStream 类(或最新代码中的WaveIn).这将让您打开麦克风，并接收包含最新捕获字节的事件.这将很容易传递给流.

If you want a .NET solution, you can check out NAudio which is an open source audio library. Look at the WaveInStream class (or WaveIn in the latest code). This will let you open a microphone, and receive events containing the latest captured bytes. This would be quite easy then to pass on to a stream.

至于使用 LAME 编码 MP3，我见过的一种方法是通过 stdin 将音频传递给 lame.exe，然后从 stdout 读取 mp3.我认为这比获取 LAME DLL 并为其编写互操作包装更容易.

As for encoding MP3 using LAME, one approach I have seen used is to pass the audio to lame.exe via stdin and read the mp3 from stdout. This is I think easier than getting hold of a LAME DLL and writing interop wrappers for it.

更新:我创建了一个示例项目，该项目使用 NAudio 从麦克风录音，并在 http://voicerecorder.codeplex.com.请参阅我在 Coding4Fun 上的文章此处.

Update: I have created an example project that uses NAudio to record from the microphone, and LAME to save as MP3 at http://voicerecorder.codeplex.com. See my article at Coding4Fun here.