[Asterisk-Users] Answering Machine Detection

[Ray Burkholder]

Might want to write a new 
> "energy detector" algorithm in dsp.c though based on a wideband/low Q 
> resonator approach (move the pole way in towards the origin) 
> as opposed to 
> narrow band goertzels (pole on the unit circle). More robust 
> for this type 
> of work.

Where does one go to learn this terminology and the math to implement it?


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