[maxmsp] gain~&linedrive~ equation

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

>
> 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

#P window setfont "Sans Serif" 9.;
#P flonum 196 206 65 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P flonum 70 206 65 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P window linecount 1;
#P newex 196 179 260 196617 expr 1. * exp(-127.*log(1.06)) * exp 
($f1*log(1.06));
#P number 70 133 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P user hslider 70 108 18 128 128 1 0 0;
#P newex 70 181 120 196617 linedrive 127 1. 1.06 30;
#B color 5;
#P connect 1 0 2 0;
#P connect 2 0 0 0;
#P connect 0 0 4 0;
#P connect 2 0 3 0;
#P connect 3 0 5 0;
#P window clipboard copycount 6;