Thanks, Dave for the tutorial, and thanks, Jack.  Jack you say:

> On Aug 14, 2018, at 6:01 PM, Jack Hickish <[email protected]> wrote:
> 
> The biplex FFT which Dave mentions does all the 2 x real = 1 x complex 
> tricks. However, in the fft_wideband_real block, this is followed by a 
> parallel FFT direct block which doesn't have any of these optimizations, and 
> is thus ~2x bigger than it needs to be.

This was how it looked to us, and I think encapsulates exactly the concern.   
It really seemed odd to me that it has this inefficiency as I was more 
expecting the world to look the way Dave described it.

We are looking at Ryan’s paper, and note the Github link.

Jonathan

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