I think you want to look at Richard Lyon's book on DSP, Fig 13-61(b).
The book should be on the recommended reading list for GNU Radio. I
think this is an implementation of the algorithm you are trying to
implement.
I've used this method successfully with the OSSIE SCA code from VT.
Before I ask my question, I'd like to thank everyone that's been helping me
out. I (and my peers at Purdue) are just starting out with the USRP and
really appreciate the support.
On to my question, I wrote a demodulation block for FM that uses a method
different than the provided
