关于DSound捕捉缓冲区设置特效的问题！

iComputerLion 2010-07-17 10:31:01

正常的录音没有任何问题！
但目前想加入一些特效，特别是电流声降噪！

设置特效的代码如下：
CaptureBufferDescription CapBufferDes = new CaptureBufferDescription();

CaptureEffectDescription []CapEffDes=new CaptureEffectDescription [1];
Guid EffGUID = DSoundHelper.StandardChorusGuid;
Guid EffInstance = DSoundHelper.InterfaceEffectsChorus;
CapEffDes[0].GuidEffectsClass = EffGUID;
CapEffDes[0].GuidEffectsInstance = EffInstance;
CapBufferDes.CaptureEffectDescription = CapEffDes;
CapBufferDes.Format = theFormat;
CapBufferDes.WaveMapped = true;
CapBufferDes.ControlEffects = true;
NotifySize = 20480;
theBufferSize = NotifySize * NotifyNum;
CapBufferDes.BufferBytes = theBufferSize;
theCapBuffer = new CaptureBuffer(CapBufferDes, TheCapture);
尝试过DSoundHelper的许多特效GUID，均出错- theCapBuffer = new CaptureBuffer(CapBufferDes, TheCapture);参数值不再预期范围！参考一些文档，说是捕捉缓冲区只支持回声消除和降噪。但这两种我也设置失败！
那么这里问题我猜测有两种可能：1.缓冲区不支持 2.Guid EffInstance = DSoundHelper.InterfaceEffectsChorus;这里的GUID设置错误！但我没能找到正确的设置方法！

请大家指教！

如果实在不行，就只好拷贝到辅助缓冲区了！

...全文