Thanks very much. This is the answer for me! Best, Peiman
*www.peimankhosravi.co.uk || RSS Feed<http://peimankhosravi.co.uk/miscposts.rss> || Concert News <http://spectralkimia.wordpress.com/>* On 28 October 2013 10:27, Funs Seelen <funssee...@gmail.com> wrote: > On Mon, Oct 28, 2013 at 10:05 AM, peiman khosravi < > peimankhosr...@gmail.com> wrote: > >> Since I'm on a mailing spree: how can I make a pd version of slide~ >> (MSP), which, according to the msp reference, is a logarithmic lowpass >> filter for smoothing envelops. Anything similar will do. I'm using vline~ >> for now to smooth out midi faders but it doesn't feel quite the same. >> >> And on a related subject: what is the best way to create an exponential >> signal ramp? >> >> > [vline~] is not a lowpass filter, so I guess you use [vline~] to control a > signal controlled lowpass filter. To make this exponentional you could > connect [vline~] to the right inlet of [pow~] and make sure the output of > [vline~] is [0-1] (and never exceeds 1). Then choose your range (e.g. > [500-1000]). Connect [sig~ 2] to the left inlet of [pow~] and multiply the > output by 500. To scale the range, just use [*~] or [/~] and never [+~] or > [-~], for you're working on an exponential scale. This means that an output > of 0 is impossible, so for a logarithmic amplitude control choose a very > large range (e.g. 1-100000) and divide the output by the same value to get > the range [1/100000-1]. > > Hope this helps. > >
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