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    Saturation Models (Neve, Tweaker, Oxford Inflator) in FAUST

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    • A
      Allen @Mighty23
      last edited by

      @Mighty23
      Nice work!
      For the band split, you may want to use the linkwitz riley instead of svf.

      About the denormal protection, may I know what CPU you're are running this code on? Does this directly cause the crashing?
      This might be useful for some legacy CPUs and it won't likely really be a problem for modern x64 CPU afaik.

      1 Reply Last reply Reply Quote 0
      • clevername27C
        clevername27 @Mighty23
        last edited by

        @Mighty23 Very interesting, and thank you for sharing. Am I correct that this is multiband distortion, or is there also some dynamics processing as well?

        M 1 Reply Last reply Reply Quote 0
        • clevername27C
          clevername27 @Morphoice
          last edited by

          @Morphoice Thank you for sharing. Not a whacking, but I work with two of these companies; could I ask you to pls characterise these as more "…in the spirit of…" and not "…copies of…"? 🙏

          1 Reply Last reply Reply Quote 1
          • clevername27C
            clevername27 @Allen
            last edited by

            @Allen I assume nobody is here posting actual transfer functions they measured.

            MorphoiceM 1 Reply Last reply Reply Quote 0
            • M
              Mighty23 @clevername27
              last edited by

              @clevername27 said in Saturation Models (Neve, Tweaker, Oxford Inflator) in FAUST:

              or is there also some dynamics processing as well?

              there is no compressor/limiter/gate in the processing. I would consider it 100% multiband waveshaping.

              @Allen said in Saturation Models (Neve, Tweaker, Oxford Inflator) in FAUST:

              For the band split, you may want to use the linkwitz riley instead of svf.

              Yes, for sure. Many Thanks.

              @Allen said in Saturation Models (Neve, Tweaker, Oxford Inflator) in FAUST:

              may I know what CPU you're are running this code on?

              10510u i7 on Windows
              Late 2016 Mini Mac overclocked and open-core operating system.

              Free Party, Free Tekno & Free Software too

              1 Reply Last reply Reply Quote 1
              • MorphoiceM
                Morphoice @clevername27
                last edited by Morphoice

                @clevername27 they're not measured, someone on reddit reverse enginered them so they are somewhat common knowledge among the DSP community, I'm not claiming any of those is a copy of something, it's just knowledge I gathered off the web. This is an old post though, I'm making my own functions for saturation now, and I'm using desmos to create them, closely matching stuff I can indeed measure from real hardware and then bring them over in faust. Unfortunately it's all done by hand, I have no Idea on how to "automatically" transfer measurements into transfer functions. It's a lot of guesswork until the curve looks somewhat similar

                Those are the two waveshaper curves I find most pleasing, sonically, anything in between those is great and much faster calculated than the popular tanh for saturation

                Screenshot 2025-01-30 at 14.08.55.png

                https://instagram.com/morphoice - 80s inspired Synthwave Music, Arcade & Gameboy homebrew!

                clevername27C griffinboyG 2 Replies Last reply Reply Quote 3
                • clevername27C
                  clevername27 @Morphoice
                  last edited by

                  @Morphoice Thank you for sharing. 🍸

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                  • griffinboyG
                    griffinboy @Morphoice
                    last edited by

                    @Morphoice

                    If you want to find the functions automatically it's not that hard I can show you. It can be done with python or MATLAB very easily.

                    You'll quicky discover that a static waveshaper cannot represent the measurements of analog distortion, but you can however create the 'best fit' automatically.

                    MorphoiceM 1 Reply Last reply Reply Quote 0
                    • MorphoiceM
                      Morphoice @griffinboy
                      last edited by

                      @griffinboy it's probably a good idea to morph between waveshaping curves according to signal strength but then again here we are considering hysteresis again ;)

                      https://instagram.com/morphoice - 80s inspired Synthwave Music, Arcade & Gameboy homebrew!

                      griffinboyG 1 Reply Last reply Reply Quote 0
                      • griffinboyG
                        griffinboy @Morphoice
                        last edited by

                        @Morphoice

                        yeah no, morphing a waveshaper based on signal strength doesn't really have much effect unless it has memory or smoothing. Else you've just done a static transformation of the curve and created another static curve. It has to have memory / hysteresis to actually represent anything nonlinear.

                        But collecting transfer function data from analog devices can still be super useful and can inform approximations.

                        clevername27C 2 Replies Last reply Reply Quote 0
                        • ChazroxC
                          Chazrox @Morphoice
                          last edited by

                          @Morphoice Where can I learn how to apply this? Maybe you can tell me what this is and I can do y research. Thanks brotha.

                          1 Reply Last reply Reply Quote 0
                          • clevername27C
                            clevername27 @griffinboy
                            last edited by

                            This post is deleted!
                            1 Reply Last reply Reply Quote 0
                            • clevername27C
                              clevername27 @griffinboy
                              last edited by

                              @griffinboy Doing each partial statically will model non-linearity.

                              1 Reply Last reply Reply Quote 1
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