CSCore:如何在音频捕获期间应用效果 [英] CSCore: How to apply an effect during audio capture
问题描述
First of all: I found already this question: Is it possible to capture audio output and apply effects to it?. But it does not answer my question.
我的问题:几个月前,我问过如何使用cscore记录音频输出: http://cscore.codeplex.com/wikipage?title=Build%20a%20source%20chain&referringTitle=Documentation ,但它仅显示了如何将效果应用于回放. 我正在寻找有关如何执行操作的提示或文档.我很确定,我丢失了一些东西,但是我真的不知道如何将捕获的内容转换为类似回放的内容?
My problem: I've asked how to record the audio output with cscore a few month ago: C# recording audio from soundcard. All that works fine, but now I would like to extend my application. I would like to offer the ability to apply effects to the recorded audio in realtime. I've already found this documentation: http://cscore.codeplex.com/wikipage?title=Build%20a%20source%20chain&referringTitle=Documentation but it just shows how to apply effects on to a playback. I am looking for a hint or a documentation on how to do that. I am pretty sure, that I am missing something but I really don't know how to transform a capture to something like a playback?
推荐答案
您的方法正确.建立源链是一个很好的方法.您可以使用SoundInSource
类将ISoundIn
对象简单地转换为音频源( SoundInSource ).我已经修改了最后一个问题的代码:
You're on the right way. Building a source chain is a good approach. You can simply convert the ISoundIn
object to an audio source by using the SoundInSource
-class (SoundInSource). I've modified the code from the last question:
using (WasapiCapture capture = new WasapiLoopbackCapture())
{
//if nessesary, you can choose a device here
//to do so, simply set the device property of the capture to any MMDevice
//to choose a device, take a look at the sample here: http://cscore.codeplex.com/
//initialize the selected device for recording
capture.Initialize();
//create a wavewriter to write the data to
using (WaveWriter w = new WaveWriter("dump.wav", capture.WaveFormat))
{
//convert the ISoundIn object into an audio source
//make sure, that the ISoundIn object is already initialized
var captureSource = new SoundInSource(capture){ FillWithZeros = false };
//build any source chain
var echoEffect = new DmoEchoEffect(captureSource);
int read = 0;
var buffer = new byte[echoEffect.WaveFormat.BytesPerSecond]; //buffer to read from the source chain
captureSource.DataAvailable += (s, e) =>
{
while ((read = echoEffect.Read(buffer, 0, buffer.Length)) > 0) //read all available data from the source chain
{
w.Write(buffer, 0, read); //write the read data to the wave file
}
};
//start recording
capture.Start();
Console.ReadKey();
//stop recording
capture.Stop();
}
}
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