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Ideas of processing after hexaphonic pickup

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  • Ideas of processing after hexaphonic pickup


    It would be good to gather those who are interested in this.
    Despite there are lot of done in the world by brands like Roland, and there may be question "what for? if we have a COSM from pro company..." I would agree but not completely. The contemporary software allowing us to make our own like Reaktor is - very promising stuff for endless ideas of custom designs of complex guitar gears.

    I started with standard Roland hex and its cable.
    My main concepts of idea are these:

    1) There is no place for critics of digital "mode of soundlife". All who think "digital will never be as good as hardware analog" please do not discuss this here. This is far another theme and place.

    2) To refuse from any real hardware gear anyway, no way back. Only use of the best virtual modeling inside computer. Every sound and setup is completely under control and not dependable on any external changing conditions.
    In this case, use as much digital high resolution parameters as possible while processing.

    3) The basic setup is simple: Hexaphonic pickup, cable >> 6-channel analog inputs capable sound card >> Powerful, versatile software capable to receive 6 channels+ >> stereo output.

    As for processing software, there may be several levels of hierarchy inside it. For instance the higher-level shell can be the software that may load different vst dlls inside itself. Like VSTHost. We can make any kind of connections, parallel and serial between different vst plugins inside this VSTHost. For instance, we may load GuitarRig inside it with its virtual amps, following after NI Reaktor, while Raktor receives 6 signals from 6 input channels and process these 6 signals separately. Reaktor's architecture for this case may be very complex and multiple-leveled itself. There are lot of processing units inside (envelope-followers, driven filters, saturators, wavetables, etc. Ok. All 6 can be mixed in the end of Reaktor and go out for feed in amps of Guitar Rig or Amplitube or anything else you choose.

    Another point is that NOT refuse from MIDI completely.
    After HEX there can be MIDI controller fed by 13pin cable split. My Idea is that not to use MIDI generators additionally for forming a sound. The idea is that to use MIDI commands only for controlling some of units of realtime signal processing. For instance there may be used frequency followed filters which can be precisely controlled by MIDI NotePitch value modules.
    This idea based on the fact there is always a risk of random MIDI note behavior when you play not very perfect. So if you could use MIDI soundgenerator mixed with your processed guitar signal so you get the wrong sound in result due to possible "ghost note" from MIDI. But in the case of wrong ghost note you will get not such a bad result if you use MIDI controlling over the several filter only, for instance. you will get the "occasional filtering over the right note" in this case. This affects much gifferently on our ears.

    If this thread will gather some enthusiastic heads I will continue with putting some examples of my schematics and samples of processing sound.

  • #2
    The main problem with PC based systems is latency. It is a struggle to get it low enough for real-time playing.

    I'm still interested in making a hexaphonic Tesla guitar controller. I just sold my existing monophonic setup to a local artist so it may be time for a version 2. The approach described above would work, in fact I was thinking of trying it, but it needs some sort of additional hardware to convert the soundcard output into a pulse train suitable for gating the Tesla coil's RF generator.
    "Enzo, I see that you replied parasitic oscillations. Is that a hypothesis? Or is that your amazing metal band I should check out?"


    • #3
      I cant stand the latency too and could not make it all. I use 64 buffer sizes for eliminating the feel of latency, after using 128 before when the latency was very compromised even so.
      As about Tesla controller - will read about it because did not know about it


      • #4
        I am very interested in this topic.

        I have been using a multi-channel 7-string pickup (heptaphonic) for several years now. There are a bunch of simple processing concepts which I really love:

        - having high gain distortion on each channel - so complex chords sound much clearer than with a traditional mono signal

        - having basic paning on each string so a stereo image is made on every chord

        - having a different delay time on each string so polyrhythmic delays are created on any chord

        - having a different auto-pan speed on each string for a very rich chorus-like effect


        • #5
          I'm very interested in this concept. My band uses a Sonuus B2M converter to trigger samples from Bass Guitar. I'm certainly not an expert and am still looking for a better way to do this. In my view, a lot of the latency is in the "front end" rather than the processing end. Proof of this is that the G2M (guitar version) works much better and the higher up the fretboard you play, the better it tracks. As of now, it just takes x amount of time to analyze string vibration with a degree of accuracy. The lower the note, the longer it takes due to the wavelength- simple physics. We are able to trigger samples with a degree of accuracy I'd call "close enough", but it leaves a lot to be desired.
          Of course a hexaphonic setup would be better than what we are using, but we're also trying to stay wireless, which presents yet another problem. I am constantly looking for a better mousetrap.
          "Yeah, well, you know, that's just, like, your opinion, man."


          • #6
            Ok, I told about putting some of samples of my achievements here.

            Here is the brief demo of my hex guitar processing recorded live


            I didnot convert the wav into mp3 for better estimation. the file is about 40 Mb.

            Please give your thoughts in reply


            • #7
              Yes, it's maybe very fine thing (G2M) but monophonic. For bass it is even more interesting then polyphonic system due to almost 100% of mono notes from bass lines.
              And I agree with you about "front end" latency issues. And this concerns if to use midi conversion only.


              • #8

                From your concepts the only first is principal for me, I will explain why.

                My main goal is to achieve some new spectrum of sounds in the end. It's hard to get some interesting ones.
                As about such things like delaying, panning - these do nothing for changing a sound in its texture, they are effects only, though sometimes may be perceived very cool in hexaphonic setup


                • #9
                  I like your track very much Yury Very good, rich and interesting sounds.

                  Were you using the MIDI-triggered filtering you mentioned in your first post on that track?


                  • #10
                    Yes, there is using of MIDI-triggered filtering but not explicitly in this case, maybe "20%" only. The sound made of lot of layers and some of them is MIDI-controlled.
                    I'd like to show some other samples later that will be much different.


                    • #11
                      Here is another sample representing some heavy-like guitar sound



                      • #12
                        Sounds great!

                        Reminds me of Rush.


                        • #13
                          Very cool stuff, Yury!
                          "Yeah, well, you know, that's just, like, your opinion, man."


                          • #14
                            And there is similar one more chunk with a heavy-like kind of guit sound. Only drums and one stereo track with guitar (no doubled parts for stereo improvement)


                            This resulting sound is obtained with Reaktor NI only by adding of 6 different processed layers going in parallel of HEX including one complex layer of monophonic processed sound (HEX mixed into one bus before processing). This monophonic layer consists at the same time of 4 layers (parallel) which are several kinds of saturators and filters. The output effects - stereo chorus only.

                            Guitar used: Yamaha PAC 112j ($250), Godin strings ($9), Roland HEX installed with Yamaha breakout unit for 13pin
                            Last edited by Yury Oransky; 08-30-2013, 01:24 PM.


                            • #15


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