[time-nuts] Digital Mixing with a BeagleBone Black and D Flip Flop

Jim Lux jimlux at earthlink.net
Thu Oct 16 08:22:16 EDT 2014

On 10/16/14, 3:59 AM, Bob Camp wrote:
> Hi
> I wonder what they are using for the “lpf / zero crossers” in that version.

Aren't those the usual limiter chain? Described in earlier papers by the 
same folks.  There was a lot of discussion about this architecture on 
the list a few years ago.

Here's something you might want to take a look at:

By the way.. here's the reference from the list

Dick / Kuhnle / Sydnor: "Zero-crossing detector with sub microsecond
jitter and crosstalk"

www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA515384  the paper

http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA239372  the entire PTTI 

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