Question Extracting Sound Data (What-You-Hear)

[Iketh]

I need to get the decibel level of sound being sent to the sound card (not the actual sound level the speakers are instructed to emit via volume level).

There is next to no information i can find on the net to even access sound data. Could anyone point me in a direction for this? The OS will be vista/7. Thanks.

 

[Iketh]

I guess this is a rare subject...

 

[Iketh]

For example:

Private Declare Function GetAsyncKeyState Lib "User32" (ByVal vKey As System.Windows.Forms.Keys) As Long

This is used to capture key strokes. Is there something along the same lines for accessing sound passing through windows to the sound device?