[PD] smoothing numbers: something like Max's "slide" object?

[Daniel Iglesia]

That expr handles increasing vs decreasing separately, with two separate
smoothing coefficients (the .1 and .2). Break them out into additional
inputs to [expr] and those can be changed dynamically as well.

On Wed, Jan 18, 2017 at 12:52 PM, Ali Momeni <batchku at gmail.com> wrote:

> Thanks daniel; i'm aware of this technique.
> Im specifically looking for a smoothing method that allows variable
> amounts of smoothing, and also implements a way to have increasing values
> be smoothed differently than decreasing values.
>
> Any thoughts on that?
>
> -ali
>
> On Wed, Jan 18, 2017 at 3:45 PM, Daniel Iglesia <daniel.iglesia at gmail.com>
> wrote:
>
>> Grabbing the previous incoming value, and one [expr] should do it, to
>> implement a first order filter
>>
>> y[i] := y[i-1] + α * (x[i] - y[i-1])
>>
>> as
>>
>> [expr if($f1>$f2, $f3+.1*($f1-$f3), $f3+.2*($f1-$f3))]
>>
>> where $f1 is the incoming number, $f2 is the previous incoming number,
>> the output of this expr is routed into the second inlet as $f3.
>> .1 is the smoothing coeff for increasing, .2 is the smoothing coeff for
>> decreasing.
>>
>> So:
>>
>> [(floatatom)(
>> |
>> [t f f b]
>> |   \  /
>> |    \/
>> |    /\
>> |   /  \
>> |  [float]
>> |   |
>> |   |
>> |   |
>> [expr if($f1>$f2, $f3+.1*($f1-$f3), $f3+.2*($f1-$f3)) ]
>> |
>> |
>> [(floatatom)(
>> |
>> <route connection into 3rd outlet of expr>
>>
>>
>> On Wed, Jan 18, 2017 at 11:18 AM, Ali Momeni <batchku at gmail.com> wrote:
>>
>>> Hello all,
>>>
>>> Can someone point me to an existing abstraction/external that behaves
>>> somewhat like Max's "slide" object?  Specifically, i'm looking for a way to
>>> smooth (low-pass) floats (control rate) but with the ability to smooth out
>>> increasing and decreasing values differently.
>>>
>>> Thank you!
>>>
>>> -ali
>>>
>>> _______________________________________________
>>> Pd-list at lists.iem.at mailing list
>>> UNSUBSCRIBE and account-management -> https://lists.puredata.info/li
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>>>
>>
>
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