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Hi Duncan - here you go:

- Lua Agent – Difficult
- Wavetable oscillator - Easy, cfilter
- Noise generator – Easy, cfilter
- Vocoder - Medium (because some DSP needed)
- Arpeggiator – Difficult – events, timing
- Plucked string physics model - Medium but cfilter (DSP again)
- Chord generator – Difficult – events, files
- Voice input to interpreter - Difficult (probably - level unknown really)
- Http to light gateway - Easy/Medium – threading
- VU Meter with lights - Easy
- Audio level to single light - Easy


Mathematical agents (all fairly easy):

- Differentiator (Slope)
- Sample/Hold (including max, min and reset)
- Two way momentary/toggle switch
- Multi axis control – controlling value sets from one or two inputs

Worth noting that the metering ones look near to done now, and I think you and Robin were a good way through the noise oscillator as of Sunday.

John

Thanks John. Yep, we're close. Robin's going to send me the code tomorrow so we should have something up on github in a day or two.

JSN's wiki is a good idea, and that might also help capture the requirements for new agents.

Dragica, how are you getting on with the wavetable?

D

Just to add to that last comment (and following on from Duncan's), yes please use that page to flesh out requirements/specs for them too - we'll try to add some substance to each one in the next few days, but feel free to add too.

John

Hi Ferdinand

I've just had a read of your proposed Agent, and it looks interesting. I have no idea if it will be good or not, but if you've had good experiences with a related set of functionality in the past then that's hopeful. It's certainly one of those 'need to try that so see how cool it is' ideas.

A couple of things sprung immediately to mind - firstly (and boringly) we already have an Agent called Cycler so you'll need a different name. I really don't have a suggestion though as it's quite an odd piece of functionality, perhaps others here might have an idea?

Secondly, it would be very good if you can think of a way that this can work that doesn't need to care about musical intervals, so it can exist pre the Scalers. This would open up a lot of interesting possibilities if scales apart from chromatic were ever used (remember that in a micro tonal tuning the concept of a perfect 5th can be a bit irrelevant for example). If you assume that the Scaler is set to chromatic you can just use course and key position (which is floating point nowdays) as an equivalent to your chromatic scale, and retain the freedom to do subsequent strange musical mappings - the chromatic scale remains the degenerate case where key and course numbers can behave essentially like a straight scale. This could be particularly important in a system set up to use exclusively just temperament for example, where once again the intervals are different depending on the key you are in but the behaviour of your proposed Agent probably shouldn't change or even have to be aware of that fact (a fact that could be seriously complicated to implement as well).

John

So this agent is a way of splitting up the keyboard, such that as you play up a scale from one section into another, it remaps the section you just left in order to extend the range of the instrument, is that correct? Seems like a neat way to reach higher and lower ranges on the Pico without having to reach for the octave keys, but has the potential to be brain melting depending on the phrase you want to play?

TheFerdinandFunkyFingerer ?

The GeoSynth instrument on the iPad does something very crude that sounds like it's going into the same direction. Based on the pattern that you're playing, it automatically transposes to higher or lower octaves. I've never found it particularly useful as it does tend to jump when you don't want to and not always jump when you want. It sometimes feels like you have to play a certain way for the auto jumping behavior to work, which I personally find weird. However, it would be interesting to see if something more intelligent can be built that does this on the Eigenharp.

@0beron: On second thought: Your proposal to retune areas before you even touch them also works when done right and is probably even better from the standpoint of getting reusable subcomponents. Will rework the spec on the weekend.