I have found this: 1/f noise can be created using random noise generators but it can also be producted using deterministic functions. One such method is a finite difference equation proposed by I. Procaccia and H. Schuster
at http://paulbourke.net/fractals/noise/ On Fri, Feb 15, 2013 at 4:05 PM, Bob Camp <[email protected]> wrote: > Hi > > I think a simple table approach sounds like the quick / dirty way to go. > > Bob > > On Feb 15, 2013, at 9:56 AM, Jim Lux <[email protected]> wrote: > > > On 2/15/13 6:21 AM, Bob Camp wrote: > >> The timing does relate to multiple valves, so it's not quite as simple > as a single rate. The time delta's for the other stuff are all pretty > short, so you may or may not be planing to randomly drive them as well. > >> > >> It all depends on how fanatic you get about the timing ... > >> > > > > Not very.. > > The physical device being driven has one solenoid valve that fills and > drains the "heart bladder". The radar looks at the gross surface movement > of the thorax (on the order of 1mm), and we want something that isn't > perfectly regular and that has some variability (so that the algorithms > used to detect the heartbeat don't wind up relying on heart rate being zero > bandwidth). > > > > Rather than just implement something like > > > > interval = 60/bpm + 0.1*rand > > > > I figured if there was an easy way to generate something from a > "realistic" distribution, it would be nice. > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
