DSP Robotics Support

Hi to all.
I want to make keyboard midi split to use one oscillator that work on a portion of the midi notes and another oscillator that work on the another portion of midi notes.
But my scheme does not work as I espected.
I do not want to use only one "Voice to Poly" module with arrays in the Lokey/Hikey inputs because, despite I would use the voice tag to mute each oscillator on the undesired key zone, the midi data still going to the two oscillators.
I need to filter that keyboard midi data as the "note equal" module does it, but I need to do it with several notes.
Any suggestion? Please see the attached scheme.

Hi gvalletto

As chance would have it I recently tried the scheme you show in a current project and it doesn’t work. You are trying to merge 2 completely separate “synths”, but in poly. You have to convert both streams to mono, and then join them together in mono.

I’ve spogged the FSM to show the result. In your original one you will only hear the stream you connected last, so you can hear one OR the other, but never both.

However, when I was trying with 3 streams I hit another problem. You may have to duplicate any envelopes, filters etc for both streams. But when you do this, the FS compiler behaves oddly if you have common green wireless controls for the “slave” modules in each synth channel.

The only way it could work is if you have 2 completely separate and self-contained synths, each with their own individual controls. This may be what you want of course!

You are correct to say that the tag system with one MIDI section will use CPU even for the not-chosen range, assuming you use muting. The tag system is really intended for choosing a sample from a mem array which you will always hear, so the correct sound will play for a given key or key range. In this case the system will open new channels purely based on the number of notes played, when they fall within a specified range.

Maybe one of the experts can explain the technicalities better than me, but this was based on my experience and subsequent assumptions.

Good luck!

Spogg

Hello Spogg! Your explanation is clear, I understood perfectly. Thank you very much!
I think I must remake my project, separating all the shared stream channels at each oscillator...