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    How to build SNEX Playground?

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    • d.healeyD
      d.healey @Casmat
      last edited by

      @Casmat I don't think the SNEX playground has been updated for a long time. I'm not sure it has any advantage over just working directly in HISE.

      Libre Wave - Freedom respecting instruments and effects
      My Patreon - HISE tutorials
      YouTube Channel - Public HISE tutorials

      CasmatC 1 Reply Last reply Reply Quote 0
      • CasmatC
        Casmat @d.healey
        last edited by

        @d-healey ooh, how do I work directly in hise? I tried pressing the snex popup button in the snex shaper node in scriptnode to edit, but it does nothing

        i make music

        d.healeyD 1 Reply Last reply Reply Quote 0
        • d.healeyD
          d.healey @Casmat
          last edited by

          @Casmat Click the 3 dots at the left, create a new file. The SNEX editor will open in the same panel as the script editor.

          Libre Wave - Freedom respecting instruments and effects
          My Patreon - HISE tutorials
          YouTube Channel - Public HISE tutorials

          Christoph HartC 1 Reply Last reply Reply Quote 0
          • Christoph HartC
            Christoph Hart @d.healey
            last edited by

            @d-healey the SNEX playground is still functional but the main use case for it is me making unit tests for testing specific SNEX language features.

            CasmatC d.healeyD 2 Replies Last reply Reply Quote 0
            • CasmatC
              Casmat @Christoph Hart
              last edited by Casmat

              @Christoph-Hart @d-healey Nice! I found this code on musicdsp.org:

              x < a:
                f(x) = x
              x > a:
                f(x) = a + (x-a)/(1+((x-a)/(1-a))^2)
              x > 1:
                f(x) = (a+1)/2
              

              How would I turn this into something snex can understand? Wouldn't it use if statements and how should X and A be swapped? It's supposed to make a soft saturation

              Thanks!

              i make music

              ustkU 1 Reply Last reply Reply Quote 0
              • d.healeyD
                d.healey @Christoph Hart
                last edited by

                @Christoph-Hart Oh I think I was thinking of the SNEX workbench.

                Libre Wave - Freedom respecting instruments and effects
                My Patreon - HISE tutorials
                YouTube Channel - Public HISE tutorials

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                • ustkU
                  ustk @Casmat
                  last edited by

                  @Casmat said in How to build SNEX Playground?:

                  x < a:
                  f(x) = x
                  x > a:
                  f(x) = a + (x-a)/(1+((x-a)/(1-a))^2)
                  x > 1:
                  f(x) = (a+1)/2

                  This translates to something like:

                  float out = 0.0;
                  
                  if (x < a)
                     out = x;
                  else if (x > a)
                     out = a + (x - a) / (1.0 + Math.sqr((x - a) / (1.0 - a)));
                  else if (x > 1)
                     out = (a + 1.0) / 2.0;
                  

                  Although it can probably be optimised depending on the use case...

                  Can't help pressing F5 in the forum...

                  CasmatC 1 Reply Last reply Reply Quote 0
                  • CasmatC
                    Casmat @ustk
                    last edited by

                    @ustk I was trying to write it out and got this:

                    	float getSample(float input, float a)
                    	{
                    		if(input < a)
                    		{
                    			return input;
                    		}
                    		else if(input > 1)
                    		{
                    			return (a + 1) / 2;
                    		}
                    		else
                    		{
                    			return a + (input - a) / (1 + ((input - a) / (1 - a))**2);
                    		}
                    	}
                    

                    definitely wrong in all sorts of cases, I haven't ventured into dsp code, and this is by far the deepest, so thanks for helping! Have one more request, how in the world do I put this into the snex code editor? I tried reading the docs on snex, but was a bit stumped. I'm trying to build a saturation in a snex shaper node with one "Saturation" control. How do I continue?

                    Thanks a ton!

                    i make music

                    ustkU 3 Replies Last reply Reply Quote 0
                    • ustkU
                      ustk @Casmat
                      last edited by

                      @Casmat The implementation of your function looks like this:

                      	float getSample(float s)
                      	{
                      		//return your stuff here
                      	}
                      	
                      	
                      	template <typename ProcessDataType> void process(ProcessDataType& data)
                      	{
                      		auto f = data.toFrameData();
                      		
                      		while (f.next())
                      		{
                      			for (auto& s: f)
                      				s = getSample(s);
                      		}
                      	}
                      	
                      	
                      	template <int C> void processFrame(span<float, C>& data)
                      	{
                      		for(auto& s: data)
                      			s = getSample(s);
                      	}
                      

                      Can't help pressing F5 in the forum...

                      CasmatC 1 Reply Last reply Reply Quote 0
                      • ustkU
                        ustk @Casmat
                        last edited by ustk

                        @Casmat And as I wrote above, the constants should be float if you don't want to get casting errors

                        Can't help pressing F5 in the forum...

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                        • ustkU
                          ustk @Casmat
                          last edited by

                          @Casmat And one other thing, have you tried to plot your formula to see what you get out from it? Because it's going over the -1/+1 gain factor so you either need to scale the output or rework the formula...

                          Can't help pressing F5 in the forum...

                          CasmatC 1 Reply Last reply Reply Quote 0
                          • CasmatC
                            Casmat @ustk
                            last edited by Casmat

                            @ustk thanks for the info! I don’t think ive done anything with the formula, i found it on music dsp and I was clueless from the start on how to get it to be a simple saturator, is the gain factor related to the gain matching on a saturator?

                            Edit: so the gain factor is x?

                            i make music

                            ustkU 2 Replies Last reply Reply Quote 0
                            • ustkU
                              ustk @Casmat
                              last edited by

                              @Casmat So I imagine a is your gain, right?
                              What do you get as a result? Is it at least sounding "something"?
                              Does the level need to be tamed a bit perhaps?

                              Can't help pressing F5 in the forum...

                              CasmatC 1 Reply Last reply Reply Quote 0
                              • CasmatC
                                Casmat @ustk
                                last edited by

                                @ustk as far as I know when looking at it, I thought that x was the input signal and a was the saturation amount

                                i make music

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                                • ustkU
                                  ustk @Casmat
                                  last edited by

                                  @Casmat said in How to build SNEX Playground?:

                                  Edit: so the gain factor is x?

                                  f(x) means the it's the output, so a should be the gain

                                  Can't help pressing F5 in the forum...

                                  CasmatC 1 Reply Last reply Reply Quote 0
                                  • CasmatC
                                    Casmat @ustk
                                    last edited by Casmat

                                    @ustk ohh yeah! Polynomials (or maybe not)!

                                    i make music

                                    ustkU 1 Reply Last reply Reply Quote 0
                                    • ustkU
                                      ustk @Casmat
                                      last edited by ustk

                                      @Casmat At first, does it look the way you want?

                                      ![Screenshot 2023-08-18 at 20.47.17.png](Imgur is temporarily over capacity. Please try again later.)

                                      EDIT @Christoph-Hart @Dominik-Mayer Apparently there's still this Imgur over capacity issue that prevents us to see images...

                                      Can't help pressing F5 in the forum...

                                      CasmatC 1 Reply Last reply Reply Quote 0
                                      • CasmatC
                                        Casmat @ustk
                                        last edited by Casmat

                                        @ustk why was there an float s in the arguments? And I should be declaring a as a variable, right? I put the code you gave

                                        if (x < a)
                                           out = x;
                                        else if (x > a)
                                           out = a + (x - a) / (1.0 + Math.sqr((x - a) / (1.0 - a)));
                                        else if (x > 1)
                                           out = (a + 1.0) / 2.0;
                                        

                                        In the get sample func?

                                        Edit: didn’t see your post yet, the img seems broken

                                        i make music

                                        Christoph HartC 1 Reply Last reply Reply Quote 0
                                        • CasmatC
                                          Casmat @ustk
                                          last edited by Casmat

                                          @ustk try using imgbb.com

                                          i make music

                                          ustkU 2 Replies Last reply Reply Quote 0
                                          • Christoph HartC
                                            Christoph Hart @Casmat
                                            last edited by

                                            @Casmat if imgur is over capacity then there‘s nothing we can do except for stop uploading images :)

                                            ustkU 1 Reply Last reply Reply Quote 2
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