[PD] msd change mass of mass

cyrille henry cyrille.henry at la-kitchen.fr
Sun Mar 16 18:50:08 CET 2008


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" <czhenry at gmail.com> 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
>>>
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