FunnyZen

does anybody know what exactly is the equation used in the linedrive~ and gain~ objects? (See the reference manual) I think it is not clearly stated.

I want to know what exactly is the output of my gain~ object is, so I need to know this detail.

gainlinedrive-equation

On 30 Sep 2007, at 18:28, FunnyZen wrote:

> does anybody know what exactly is the equation used in the 

> linedrive~ and gain~ objects? I think it is not clearly stated.

i would say the latter is the right direction. i believe it's quite 

>
> Hi all,
>
> does anybody know what exactly is the equation used in the  
> linedrive~ and gain~ objects? I think it is not clearly stated.
>
> Is it y = b*e - a*log(c)*e*x*log(c)
>
> or y = b*exp{-a*log(c)}*e{x*log(c)}
>
> or what?

i would say the latter is the right direction. i believe it's quite  
clearly stated in the reference manual.
vb

I think you're right. But where did you get this line

Here yes, it is clearly stated. But in the msp reference manual the given equation is

which is certainly a wrong way to give an equation and certainly not clear, it could match to many different equations. Perfectly clear is something like this

On 05 Oct 2007, at 19:38, FunnyZen wrote:

> I think you're right. But where did you get this line

> #P newex 196 179 260 196617 expr 1. * exp(-127.*log(1.06)) * exp

> Here yes, it is clearly stated. But in the msp reference manual the 

you are right. in the msp reference of [gain~] the math font got lost 

it's correct in the Max reference of [linedrive], and that's where i 

>
> I think you're right. But where did you get this line
>
> #P newex 196 179 260 196617 expr 1. * exp(-127.*log(1.06)) * exp
> ($f1*log(1.06));
>
> Here yes, it is clearly stated. But in the msp reference manual the  
> given equation is
>
> y = b e-a log c ex log c

you are right. in the msp reference of [gain~] the math font got lost  
somehow.
it's correct in the Max reference of [linedrive], and that's where i  
got it from.
vb

gain~&linedrive~ equation