marius schebella a écrit : > thanks, cyrille, I did not know unpack~. also using "until" to loop 64 > times at once (in the same logical time) is much easier coding. and > since one vector of 64 samples is always seen as one unit, this should > not make a difference in cpu load distribution. > did you experience a performance difference between the unpack~ and the > tabplay~ solution? i was expecting a deference, but i did not see one. both are 10 (or more) time slower than pmpd~ for the same physical model.
cyrille > marius. > > cyrille henry wrote: >> hello, >> sorry, i don't have time, i'm not at home. >> so it's a short answer. >> >> I try 2 other way to use msd as an audio generator. >> it's not very efficient either. >> >> i think it should not be very difficult to make a msd~ external. >> anyway, for this aplication, pmpd~ external should be easier to use. >> >> there is no message to change the mass in msd, because equations are >> linear. i.e mass=1, K=0.1, D=0.1, F=0.1 is the same than mass=10, >> K=1,D=1,F=1: >> >> ++ >> c >> marius schebella a écrit : >>> one more. >>> not at all cpu-friendly but a real msd. >>> m. >>> >>> Andy Farnell wrote: >>>> >>>> >>>> You're a hero Chuck. This tallys well with the equations in Perrys >>>> book. >>>> What I was missing is the step where you get the transfer function. >>>> >>>> >>>> I made (attached) a little test rig. What isn't looking right is the >>>> underdamped >>>> behaviour. I was expecting to see a decaying oscillation around the top >>>> point. Maybe my test has errors. >>>> >>>> a. >>>> >>>> >>>> >>>> >>>> On Sat, 15 Mar 2008 19:16:29 -0500 >>>> "Charles Henry" <[EMAIL PROTECTED]> wrote: >>>> >>>>>> Note, when c goes to 0, we get a harmonic oscillator at angular >>>>>> frequency w=k/m rad/sec, which is correct. When we increase the >>>>>> damping, we get terms of e^(-0.5*c/m*t) which damps the solution. >>>>> made a typo here: >>>>> >>>>> angular frequency w=sqrt(k/m) rad/sec >>>>> and f=sqrt(k/m)/2pi Hz >>>>> >>>>> _______________________________________________ >>>>> PD-list@iem.at mailing list >>>>> UNSUBSCRIBE and account-management -> >>>>> http://lists.puredata.info/listinfo/pd-list >>>> >>>> >>>> >>>> ------------------------------------------------------------------------ >>>> >>>> >>>> _______________________________________________ >>>> PD-list@iem.at mailing list >>>> UNSUBSCRIBE and account-management -> >>>> http://lists.puredata.info/listinfo/pd-list >>> >>> >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> PD-list@iem.at mailing list >>> UNSUBSCRIBE and account-management -> >>> http://lists.puredata.info/listinfo/pd-list > > > _______________________________________________ PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list