[PD] slide~ (msp) in pd

peiman khosravi peimankhosravi at gmail.com
Mon Oct 28 21:41:31 CET 2013

Thanks very much. This is the answer for me!


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On 28 October 2013 10:27, Funs Seelen <funsseelen at gmail.com> wrote:

> On Mon, Oct 28, 2013 at 10:05 AM, peiman khosravi <
> peimankhosravi at 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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