I'd like to code an arpeggiator unless your arpeggiator is good enough? about rs-met

[RobinSchmidt]

currently, i don't have any appregiator in my library at all. but surely i'd like to add one at some point. the only sequencing kind of thing i currently have is the AcidSequencer class (used in AciDevil - you can try it in my Chainer plugin). it would be nice for the chainer to have an arp that i could just plug in front of any synth. ideal would be something like 7 aliens catanya:

https://www.kvraudio.com/product/catanya-by-7aliens
https://www.youtube.com/watch?v=7PM8p2UfmwE

...but i guess that will be a major project, so something simpler should be fine for the start as well. is your hise arp written in a special scripting language? how hard would it be to port it to c++?

[elanhickler]

it would not be difficult to port to C++, I wrote it with C++ in mind, and javascript is 90% C++ like anyway.

The only major feature it would be lacking is the ability to change... for example... if the arp plays a 1/1 long note (pretty long) and you change the tempo, it can't shorten that note, because there is no midi schedule, so any step that plays cannot be modified during playing. It creates a note on and "delayed" note off at the same time. To solve this would require a midi schedule and the ability to update the midi schedule on the fly. Maybe in C++ this would be easier than in HISE. But I don't really care about that.

Maybe if I get an arp implemented in C++ that could be a solid version 1, then we can make a more advanced version 2 in the future. It helps to create a basic arp before you go crazy with features because it requires a lot of thought. I learned a lot doing the HISE arp so when I do one in C++ it will be a little more advanced.

[elanhickler]

Oh no! I just watched the Catanya video. I'm not interested in a polyphonic arp like Catanya. What I have in mind is very monophonic-focused specifically for synths, specifically for breakbeat-style sequencing with a ton of focus on detailed per-step rhythm system to quickly and easily create sweet polyrhythms and patterns. For example, per-step length, per-step repeat/stutter, per-step division, etc, and whatever else I can think of.

Your idea is fundamentally different. Actually, you could encompass my idea just by creating multiple instances of my arp inside your arp. But that might be overkill. Or it might be extremely powerful!

[RobinSchmidt]

hmmm - so if it's going to be monophonic, then maybe my AcidSequencer class may be a starting point? did you take a look at the AciDevil module available in the Chainer? it's basically a 303 clone and the AcidSequencer class is the "core" of the step sequencer there.

[elanhickler]

How do you get host tempo?

Looking at your acid sequencer now, my HISE arp is a little more advanced.

[RobinSchmidt]

in which ways? is it conceptually similar but just more feature rich, such that it could be made as an extension (i.e. subclass) of AcidSequencer?

[elanhickler]

Well, I left room for one major feature: arbitrary step jumps both in what the next step will be You can move forward, reverse, jump a few steps, jump back, etc. Also, it has up, down, up/down, down/up arpeggiation, you could easily add random and other sequences.

It will also be possible to arbitrarily divide/hold/set time of each step.

I am also designing it to be smart, to play exactly what is expected. Some arpeggiators just do things without thinking about what the user is intending.

It features tied steps as well, I'm sure your acid arp has that though.

It has a master reset (entire arp sequence resets after X beats or never resets if you want)