[PD] amplitude of modal synthesis

[cyrille henry]

hello,

you're right.
i made some fast clean up to this patch.
it makes a nice low pass resonant filter.

i'm wondering if it's possible to have signal based frequency and 
resonant factor?

playing with block~  is the solution maybe?

Cyrille


Frank Barknecht a écrit :
> Hallo,
> frablanc hat gesagt: // frablanc wrote:
> 
> 
>>I've made this little abstraction (modale.pd), which is an
>>approximation of the mass-spring-damper equation, to make some
>>modal synthesis. The abstraction works fine, but the amplitude
>>of the impulsional response decreases with the frequency, and
>>so i'd like to "normalize" the output of the filter. (The
>>amplitude is really too big for low frequencies, as 100Hz ...).
> 
> 
> I don't have a real answer, but your patch includes lots of completely
> undefined execution orders, that might or might not be related to the
> unusual scaling. You should use manymany more trigger objects. 
> 
> For example this little construct in your patch: 
> 
>   |
>   [pow -1]
>   |\
>   | \
>   [* ]
> 
> has an undefined result. You must replace it with: 
> 
> 
>   [pow -1]
>   |
>   [t a a]
>   |   /
>   |  /
>   [* ]
> 
> to correctly get the square of the inverse as you probably intended
> and you must do similar triggering in the rest of your patch.
> 
> Maybe this already fixes your problem.
> 
> Ciao
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