CC value 1-127 value display as 50-300

[msepsis]

The synth I’m working on has an arp tempo knob, it sends cc values 0-127. 0 sets the clock to external sync while CC 1-125 changes the tempo from 50-300..

The jist of what I’m asking is how could I set the value of a uiSlider to display the actual CC value*2?

Monstrum Media | Music, Sound & Software Design, Chicago / San Francisco listen

[nozoku]

it’s problematic – if you set:
modulatorMin=50
modulatorMax=300
and modulatorValue to modulatorValue/2-24
then you have knob50=cc1 and knob300=cc126 (the min value is ok)

if you use modulatorValue/2-25 you have knob50=cc0 and knob300=cc125 (the max value is ok)

so it’s impossible to map 50-300 into 1-125 that way… 50-298 maps into 1-127 when you use modulatorValue/2-24

and I don’t know how Ctrlr handles fractions – knob299=cc125,5…

[atom]

i think that (modulatorValue/1.98)-24 will work, fractions are ok all the math stuff is there.

[nozoku]

but how the value is sent then as a CC value (or in sysex)? as a fractional number? or as a integer?

[atom]

noo, it’s always an integer, the fractions will just help you get the result, it’s the result that’s sent, and the result is always rounded.

[dnigrin]

Is it rounded or just truncated? For example would 5.9 become 6, or 5?

[atom]

it’s definetly rounded, it can give different results on different compilers though so MAC and Windows might be different, but MAC and Linux should be the same (both use gcc)

[msepsis]

Thanks atom and dnigrin – great info and very helpful discussion.

Monstrum Media | Music, Sound & Software Design, Chicago / San Francisco listen

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