tomac

I have a rotary wheel sensor, which gives out MIDI values roughly from 0 to 127. Now, I want to use it to play an audio file by granulation, so that I can roll along the sample. The rotary sensor's midi value jumps to its minimum after it reached its maximum. for now i simply used a counter to get continuous data (0 to a very large number). I don't really know if that won't lead to problems. I want to read every sample in the buffer according to the rotation speed of the wheel. To make the patch understand, that the movement is backwards I want to compare the previous value with the current one. Is there actually an object, that does that for me?

After scaling the values for very slow movements, I used a line~ object for interpolation. Unfortunately with that it doesn't seem to be possible to play the file faster than it's original speed.

well, i see how i get on, but any ideas are very much appreciated

I have a rotary wheel sensor, which gives out MIDI values roughly from 0 to 127. Now, I want to use it to play an audio file by granulation, so that I can roll along the sample. The rotary sensor's midi value jumps to its minimum after it reached its maximum. for now i simply used a counter to get continuous data (0 to a very large number). I don't really know if that won't lead to problems. I want to read every sample in the buffer according to the rotation speed of the wheel. To make the patch understand, that the movement is backwards  I want to compare the previous value with the current one. Is there actually an object, that does that for me?
After scaling the values for very slow movements, I used a line~ object for interpolation. Unfortunately with that it doesn't seem to be possible to play the file faster than it's original speed. 

rotary-sensors-and-continuous-midi-data

could do it all with groove feed the sample into a circular buffer of about 30 seconds then control the speed of playback with groove maybe. Could scale it so you could have something like -5 to 5 each side - using the wheel like a continuous pitch wheel- hope that helps.

could do it all with groove feed the sample into a circular buffer of about 30 seconds then control the speed of playback with groove maybe. Could scale it so you could have something like -5 to 5 each side - using the wheel like a continuous pitch wheel- hope that helps.
T


Two things to consider: I don't know which continuos Midi rotary you 

use, but I bet you can set it to different modes: The one you want is: 

Increment decrement. turning it right it will spit out low numbers 

(1-5), turning it left it will spit out high numbers (122-127) to be 

interpreted as complementary negative numbers. You then have to 

accumulate these values (the high ones subtracted by 128).

The soultion beside doing it yourself (what I recommend):

The other if you can't change the behaviour of your device: I have in my 

abhaXions a abstraction which does the opposite of a modulo operation, 

it will count on... Its called [!%] (to be translated "not modulo".

Two things to consider: I don't know which continuos Midi rotary you 
use, but I bet you can set it to different modes: The one you want is: 
Increment decrement. turning it right it will spit out low numbers 
(1-5), turning it left it will spit out high numbers (122-127) to be 
interpreted as complementary negative numbers. You then have to 
accumulate these values (the high ones subtracted by 128).

The soultion beside doing it yourself (what I recommend):
St.Dialin from my St.ools.
The other if you can't change the behaviour of your device: I have in my 
abhaXions a abstraction which does the opposite of a modulo operation, 
it will count on... Its called [!%] (to be translated "not modulo".
Find it at c74/share.

  [][]  [][][]  [][]  [][][]
[][][][][][][][][][][][][][][]

         Stefan Tiedje
         Klanggestalter
     Electronic Composition
               &
         Improvisation

            /~~~~~
     \   /|() ()|
     ))))) )|  |  |( \
     ///     _/)/ )))))
             ___/   ///

-------------------------x----
--_____-----------|-----------
--(_|_ ----|-----|-----()----
-- _|_)----|-----()-----------
----------()------------x-----

14, Av. Pr. Franklin Roosevelt,
94320 Thiais, France
Phone at CCMIX +33-1-49 77 51 72


oh, sorry, i completely forgot this thread, cos time was running out, but ifound solutions in the end. anyway, thank you very much for the suggestions here, it's very much appreciated.

Rotary Sensors and Continuous MIDI data