IDirectSoundCaptureBuffer8::Start Makes Everything Quiet

Hi there,

I'm using DirectSound to read in data from the default microphone and hand it off to Wwise (AudioKinetic's sound engine).

HRESULT result = DirectSoundCaptureCreate8(&DSDEVID_DefaultVoiceCapture, &myDirectSoundCapture, NULL);

...

// Generate the capture buffer description
DSCBUFFERDESC bufferDescription;
bufferDescription.dwSize	= sizeof( DSCBUFFERDESC );
bufferDescription.dwFlags	= 0;
bufferDescription.dwBufferBytes = myWaveFormat.nAvgBytesPerSec;
bufferDescription.dwReserved	= 0;
bufferDescription.lpwfxFormat	= &myWaveFormat
bufferDescription.dwFXCount	= 0;
bufferDescription.lpDSCFXDesc	= NULL;

LPDIRECTSOUNDCAPTUREBUFFER captureBuffer;

HRESULT result = myDirectSoundCapture->CreateCaptureBuffer( &bufferDescription, &captureBuffer, NULL );
if( SUCCEEDED(result) )
{
  result = captureBuffer->QueryInterface( IID_IDirectSoundCaptureBuffer8, (LPVOID*)&myCaptureBuffer )
}

After initialization, when I actually start reading in data from the microphone the sound levels in Windows (everything in windows) drops by about 15db... you can barely hear anything. At the moment I call myCaptureBuffer->Start( DSCBSTART_LOOPING )

Anyone experienced this before or know of a solution?