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„Rate of change“ output

It would be great to have an extra output, derived of the rate of change of sliding speed and pressure.

Hello!

What do you mean by extra output?


There are already 2 USB Output and also 2 midi-TRS output

You can also route any element to the CV-Gate output.

I don’t mean a physical output! A midi cc output option that can be enabled via erae lab

You can Enable Cc on X or Y axis on any element

And use Cc 74 for polyphonic behavior as well 

It does not reproduce the Glissando element but it can work in parrallel to replicate a very similar gesture (but limited to the size of the element


What I mean is not the actual midi CC value, but it’s first derivative - the rate of change. So when my finger is resting on one position, it outputs zero, and when I move it, the value increases, depending on how fast I move it. It would be necessary to define a maximum speed in order to get an output (whereas the top limit would be the scanning rate of the sensors). And an (maybe?) interpolation parameter to get smooth readings. This would enable a lot of creative possibilities!

Ok. 

We will discuss this with the dev team

But this kind of advanced features are much easier to do with MaxMSP or external as the settings are always very specific to each users

Do you have an example of a device that output similar values ?

i dont think there is another device that does this. but please hear me out, I think it is a missed opportunity if you don't do it.


maybe look at it like this:

MPE is an attempt to bring the ways in which a player might interact with his digital instrument closer to how a player would interact with an acoustic instrument, by adding more dimensions the the old concept of "key down, velocity".


lets take a second to imagine, what would be an "ideal" MPE controller?

it would allow the player to access the infinite possibilities of digital sound design AND the infinite possibilities of how a player would manipulate an acoustic instrument, and let the player recombine the two in novel ways that are impossible to do in the physical world, while maintaining the feeling of an acoustic instrument. This to me is why MPE is so interesting and exciting.


now lets take that old equation: F=m*a. thats what happens when a sound is created physically, by transferring force from one object to another. think about that..

it means force=mass*accelleration, not force=mass*velocity. in other words: when hitting a drum with a stick, its not the speed that matters, its acceleration that was applied to the stick. or a better example: when a violin bow is moving over a string, the variation in speed is fundamental to the resulting sound.


while velocity is a good standard for lots of applications, it is just a readout of speed at a single point in time. real physical objects also react to acceleration. on the erae, you now have all the sensors you would ever need for mimicking this real world behaviour of acoustic instruments. but that would require acceleration data, which could be derived from pressure and gliding gestures.


i am pretty sure that the way you determine velocity on the erae right now already is by comparing the time difference between two samples, because thats the industry standard.


nowadays physical modeling synthesis is becoming better and better, and the rise of MPE interfaces is a symbiotical development. BUT there is no MPE controller (that I am aware of) which does this, so you could be the first company to do it! and it would open many new doors, because it is perfectly in line with the spirit of MPE, which is combining digital and physical is new ways.


cheers! and thank me later :P

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