Gnomo Alegre Posted November 1, 2013 Share Posted November 1, 2013 Hello:I don't know how to use the virtual control. I don't understand it... can someone explain briefly their use?Thank you very much for the help. 1 Quote Link to comment Share on other sites More sharing options...
Display Name Posted November 1, 2013 Share Posted November 1, 2013 Hi David. If you are talking about the knobs and sliders, virtual control means they can control the parameters of another synth - either hardware or softsynth. The knobs and sliders can send MIDI control messages that tell the "slave synth" to change parameters like cuttoff, resonance, delay, etc. - you can make real-time adjustment to the slave synth just like you do on the XW-P1. As I understand it, the knobs are always sending MIDI CC messages, but the P1 needs to be in drawbar mode for the sliders to send CC. Hope this helps! Quote Link to comment Share on other sites More sharing options...
Gnomo Alegre Posted November 1, 2013 Author Share Posted November 1, 2013 I upload some images and I be more precise in the explanation. Thank you very much, Scott. Quote Link to comment Share on other sites More sharing options...
AlenK Posted November 1, 2013 Share Posted November 1, 2013 So David is asking about the virtual controllers section of the solo synthesizer. On other synthesizers the virtual controller system is called a modulation matrix. You have eight "slots." For a given slot you can choose a source for modulation - that is to say, something that sends out a signal that changes in some way, usually in time. For example, an LFO is a possible source. The modulation wheel is another possible source. For the given slot you can also choose a destination for the signal from the source. Let's say you have chosen the resonance of the total filter. If you had chosen an LFO as the source, then the LFO would now make the filter resonance increase and decrease cyclically at whatever rate the LFO is set to. The final thing you can specify is the amount by which the source will affect the destination (the Depth). You can of course choose positive amounts - the bigger the number the stronger the modulator will be applied to the destination. But you could choose a negative number instead, which inverts the polarity of the modulation signal so that a larger signal from the modulator will reduce whatever it is controlling instead of increasing it. There are over one hundred modulation sources and, by my count, over three hundred destinations. 3 Quote Link to comment Share on other sites More sharing options...
Gnomo Alegre Posted November 1, 2013 Author Share Posted November 1, 2013 Thank you very much, AlenK. Quote Link to comment Share on other sites More sharing options...
Display Name Posted November 1, 2013 Share Posted November 1, 2013 Great info, Alex. Thank you. I'm guessing the iPad Solo Synth app uses these VCs to do it's thing... Quote Link to comment Share on other sites More sharing options...
AlenK Posted November 1, 2013 Share Posted November 1, 2013 Actually, the iPad app doesn't allow you to edit the virtual controllers. You still have to set them up through the XW's menus. Maybe a future version of the app will add that. Nor does the iPad app use the virtual controllers under the surface. I am 99.99999% certain that all parameter editing is done through NRPNs. You can see in the XW's MIDI implementation document that NRPNs are defined for every solo synthesizer parameter EXCEPT those for the virtual controllers. You would need to communicate using Sysex to handle those. The core MIDI Designer app can apparently do Sysex but I'll bet its a tad more complicated than using NRPNs, especially if you implement one of the handshaking protocols (and you really should). 1 Quote Link to comment Share on other sites More sharing options...
Display Name Posted November 1, 2013 Share Posted November 1, 2013 Wow - I am learning a lot about this deep MIDI stuff this week. Thanks again, Alen. You are a great asset to the forum. Quote Link to comment Share on other sites More sharing options...
Alexandre123 Posted December 14, 2013 Share Posted December 14, 2013 Even I was struggling to do this virtual control and tried many ways. Thank god! this forum helped me a lot 1 Quote Link to comment Share on other sites More sharing options...
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