Re: [time-nuts] Linear or quadractic fit algorithms for small microcontrollers?

2018-12-27 Thread Tim Shoppa
Thanks to Magnus and Ulrich for their high-powered math, but I was playing around with "Double Exponential Smoothing" and it seems to work well for my application almost zero storage requirements. Below I toss around constants like alpha and beta - I use them in the same sense as shown here:

Re: [time-nuts] Linear or quadractic fit algorithms for small microcontrollers?

2018-12-27 Thread Magnus Danielson
Hi Tim, On 12/26/18 4:53 PM, Tim Shoppa wrote: > I know we discussed this many years ago, probably in context of the HP > Smartclock patent, but I've forgotten all the details. > > Say I have a circular buffer of up to several dozen time and offset values. > The intent was to sample at regular

Re: [time-nuts] question about multi-way measurement

2018-12-27 Thread Bob kb8tq
Hi There also are a lot of papers going back a ways by Jim Barnes and David Alan (sometimes together and sometimes separately) related to multiple clocks driving a single “estimate” of what time it actually is. Bob > On Dec 27, 2018, at 2:34 PM, Steve Allen wrote: > > On Wed