NAudio has wrappers for many parts of the WASAPI Core audio interfaces. The best place to learn about them is actually MSDN.
e.g here: https://msdn.microsoft.com/en-us/library/windows/desktop/dd756607%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396
e.g here: https://msdn.microsoft.com/en-us/library/windows/desktop/dd756607%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396