Hi Julius and Dario,
Thank you for your suggestions, took me a little to test because in online
faust ide things sound differently for some reason.
At first I was thinking about sorting algorithms but didn't know they were
just implemented, until Dario's example.
Do I get it right that we can not have a variable window length with them?



On Sun, Jan 9, 2022 at 1:12 PM Julius Smith <julius.sm...@gmail.com> wrote:

> You should be able to subtract median3 from medianFilter(3) in Faust and
> get 0 as the optimized output - Julius
>
> On Sun, Jan 9, 2022 at 1:49 AM Dario Sanfilippo <
> sanfilippo.da...@gmail.com> wrote:
>
>> Hello, Julius and Alik.
>>
>> I'm new to median filters but we should be able to use the recently added
>> sorting algorithm for arbitrary window lenghts; does the following look
>> correct to you?
>>
>> import("stdfaust.lib");
>> windowLen = 11; // it should be odd for symmetry
>> medianFilter(L, x) = (x <: par(i, L, @(i))) : ro.bubbleSort(L) :
>> ba.selectn(L, int(L / 2));
>> process = no.noise <: _ , medianFilter(windowLen);
>>
>> Ciao,
>> Dr Dario Sanfilippo
>> http://dariosanfilippo.com
>>
>>
>> On Sun, 9 Jan 2022 at 10:28, Julius Smith <julius.sm...@gmail.com> wrote:
>>
>>> Hi Alik,
>>>
>>> This came up for me at some point:
>>>
>>> // Test order 3 median smoother:
>>>
>>> median3(a,b,c) = select3(s,b,a,c)
>>> with {
>>>   cf(a,b) = 2*(a<b)-1;
>>>   s=abs(cf(a,b)+2*cf(b,c)+3*cf(c,a))/2;
>>> };
>>>
>>> process = median3(1,2,3), median3(1,3,2), median3(2,1,3),
>>> median3(2,3,1), median3(3,1,2), median3(3,2,1); // 2
>>>
>>> Cheers,
>>> Julius
>>>
>>> On Sun, Jan 9, 2022 at 12:51 AM Alik Rustamoff <alikthen...@gmail.com>
>>> wrote:
>>>
>>>> What is the way to make a median filter in faust?
>>>>
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>>>
>>>
>>> --
>>> "Anybody who knows all about nothing knows everything" -- Leonard
>>> Susskind
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>>
>
> --
> "Anybody who knows all about nothing knows everything" -- Leonard Susskind
>
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