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    Smoother Dynamic Crossfades

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

      @HISEnberg It's a standalone application I commissioned a few years ago. It takes in multiple samples of different dynamics and outputs the same samples phase aligned to each other. It's not perfect, sometimes the attacks sound a bit weird, but most of the time it does a good job.

      @HISEnberg said in Smoother Dynamic Crossfades:

      Would you use three different Samplers to enact that transition, or are you able to accomplish it using Round Robins?

      I use the built in group crossfade feature.

      If you want to build a similar thing in HISE I think Loris would be your friend.

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

      HISEnbergH 1 Reply Last reply Reply Quote 0
      • HISEnbergH
        HISEnberg @d.healey
        last edited by

        @d-healey yes thank you.

        I was just re reading the post on @iamlamprey NEATBRAIN system to see if I could gain some insights on this topic. I haven't really dug into Loris but this seems like a proper opportunity to do so.

        ? 1 Reply Last reply Reply Quote 0
        • ?
          A Former User @HISEnberg
          last edited by

          @HISEnberg NEATBrain doesn't use any crossfading shenanigans, it just loops a single cycle at its fundamental frequency to simulate a wavetable synth

          1 Reply Last reply Reply Quote 1
          • clevername27C
            clevername27 @d.healey
            last edited by

            @d-healey Isn't morphing just interpolating between the amplitudes of FFT bins?

            d.healeyD HISEnbergH 2 Replies Last reply Reply Quote 0
            • d.healeyD
              d.healey @clevername27
              last edited by

              @clevername27 I don't know

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

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              • Robert PuzaR
                Robert Puza @Christoph Hart
                last edited by

                @Christoph-Hart When I HEARD your snippet - I knew I wanted that filter for sustain. Harm. Filter is suuuuper 👍

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                • modularsamplesM
                  modularsamples
                  last edited by modularsamples

                  Excuse my naivety on the subject, but In scriptnode alone we have the ability record, analyse and import wavs, generate sine waves and have extremely large sliderpacks (if I recall, this was bumped up to something like 4000+ in a recent update). All the important stuff needed for spectral resynthesis, no?

                  HISEnbergH 1 Reply Last reply Reply Quote 0
                  • HISEnbergH
                    HISEnberg @clevername27
                    last edited by

                    @clevername27 I have generally understood it this way, though I think there are a lot of methodologies. From what I can tell there isn't a standard for spectral morphing.

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                    • HISEnbergH
                      HISEnberg @modularsamples
                      last edited by

                      @modularsamples Hypothetically, yes, I think this would be extremely complex and CPU intensive to implement though.

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                      • clevername27C
                        clevername27 @HISEnberg
                        last edited by clevername27

                        @HISEnberg @modularsamples @Christoph-Hart @Robert-Puza @d-healey I don't know if this is helpful – I'm using additive synthesis for the sustain portion of my sounds, without phase issues. Here's a screen-capture movie with sound.

                        eb60b675-6e9c-46ed-9e98-3e46dbc3bfb1-image.png
                        4dd5d891-7ba5-48a9-87c1-ba4f2e5bdd31-image.png

                        modularsamplesM 1 Reply Last reply Reply Quote 2
                        • modularsamplesM
                          modularsamples @clevername27
                          last edited by

                          @clevername27 Nice, that ring is really pleasing. This is kind of attention to detail that I aspire to.

                          Just gonna throw this into the mix:

                          Design and Run Real-time Spectral Processing on the Web with Faust
                          https://inria.hal.science/hal-04507625/document

                          And to rewind a bit, what about an equal power crossfade? Shouldn't that be a bit more forgiving when using material that' s not been phase aligned? I used to do this all the time in Logics EXS24 and the equal power fade was almost always the way to go.

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

                            @modularsamples said in Smoother Dynamic Crossfades:

                            what about an equal power crossfade?

                            EP crossfade it the standard approach that's been used for many years for dynamic layers. It doesn't solve the chorusing issue though which is why phase-alignment (or audio morphing) is necessary. I should say that this is mostly an issue for solo instruments, with ensembles it's less of a problem.

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

                            modularsamplesM 1 Reply Last reply Reply Quote 0
                            • modularsamplesM
                              modularsamples @d.healey
                              last edited by

                              @d-healey I notice it quite a bit with synthesised samples too, hence my interest, even more annoying is the tendency for crossfaded sounds to have volume dip between layers. Smoothing helps a bit (smoothed parameter in low pass mode in particular) but it's always there to some extent.

                              It's a shame physical modelling (of real instruments) never really fulfilled it's promise, but then many of us might not be here, or maybe we'd be talking about HIPME.

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