[maxmsp] Re: clumsy maths question

Quote: s.k. wrote on Sat, 01 March 2008 07:57
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> so im trying to signal-control the cutoff of the svf~. since im new to scaling signals, i have a question which may sound funny to some of you but hey i'll take the chance to make a fool of myself :)
> 
> basically what i need to know is: if i multiply a logarithmically decaying signal by whatever value, will the output still be logarithmic?

yes

> example: click~ + slide~ to make a simple logarithmic AD envelope, then multiply the outcoming signal by 200, then offset it by 20. if i connect that signal to the svf~'s cutoff input, does that mean the filter's cutoff freq. will go from 200Hz to 20Hz logarithmically?

it will go to from 20 to 220Hz and yes the shape of the curve will remain the same. Just scaled/offset.