Tempo midi control

alandalton72

Hi,

I'm trying to map the tempo of AUM to a knob on my midi controller but when it's mapped it only goes to the 2 extreme values when I twist the knob.
For example, I have the tempo to go from 90 to 140, but when I twist the know, it goes to either one of these and nothing in between.

Is there a setting I can change to get all the values in between.

Thank you.

uncledave

Is your MIDI controller using an encoder (not a pot) configured for relative mode?

Load a MIDI monitor in an AUM MIDI slot and see what your knob is sending.

Also, note that, with a MIDI CC, you'll only be able to select from 128 possible values over the range, so most of the tempi will be fractional values of BPM.

alandalton72

@uncledave said:
Is your MIDI controller using an encoder (not a pot) configured for relative mode?

Load a MIDI monitor in an AUM MIDI slot and see what your knob is sending.

Also, note that, with a MIDI CC, you'll only be able to select from 128 possible values over the range, so most of the tempi will be fractional values of BPM.

Thanks for your response.

I used midimonitor and when I twist the knob it's showing either 1 or 127, nothing in between.

espiegel123

@alandalton72 said:

@uncledave said:
Is your MIDI controller using an encoder (not a pot) configured for relative mode?

Load a MIDI monitor in an AUM MIDI slot and see what your knob is sending.

Also, note that, with a MIDI CC, you'll only be able to select from 128 possible values over the range, so most of the tempi will be fractional values of BPM.

Thanks for your response.

I used midimonitor and when I twist the knob it's showing either 1 or 127, nothing in between.

That is relative midi. 127 means decrement and 1 means increment. AUM doesn’t currently support relative midi.

uncledave

The following StreamByter script will convert those incremental CC inputs into absolute. Copy/paste the text into a StreamByter window and Install Rules. You can save it for future use, or just make it part of your saved AUM Session. Route the MIDI from the controller to the script, and then to MIDI Control. Note that the script affects all CCs; it could be made more selective. All other MIDI messages pass through unchanged.

#ConvertIncr

If load
  # using L array to save value of all CCs
  Ass L00 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L10 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L20 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L30 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L40 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L50 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L60 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L70 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P

  # convert pValue from relative to absolute, using saved value
  # logic prevents value from going outside range [0,127]
  # note that sub parameters are in/out
  Sub updateValue pSaved pValue
    if pValue == 1
      if pSaved < $127
        mat pSaved = pSaved + 1
      end
    else
      if pSaved > 0
        mat pSaved = pSaved - 1
      end
    end
    ass pValue = pSaved
  End

End # Initialization ———————————————————————————

If MT == B0 # process any CC message, any channel
  # message is in M0..M2. M1 is the CC number, M2 is the value
  # LM1 is the saved value for this CC
  updateValue LM1 M2
End

wim

What model of midi controller? Perhaps you can reconfigure it so the encoders send absolute rather than relative incremental messages.

alandalton72

@uncledave said:
The following StreamByter script will convert those incremental CC inputs into absolute. Copy/paste the text into a StreamByter window and Install Rules. You can save it for future use, or just make it part of your saved AUM Session. Route the MIDI from the controller to the script, and then to MIDI Control. Note that the script affects all CCs; it could be made more selective. All other MIDI messages pass through unchanged.

#ConvertIncr

If load
  # using L array to save value of all CCs
  Ass L00 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L10 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L20 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L30 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L40 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L50 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L60 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  Ass L70 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +P
  
  # convert pValue from relative to absolute, using saved value
  # logic prevents value from going outside range [0,127]
  # note that sub parameters are in/out
  Sub updateValue pSaved pValue
    if pValue == 1
      if pSaved < $127
        mat pSaved = pSaved + 1
      end
    else
      if pSaved > 0
        mat pSaved = pSaved - 1
      end
    end
    ass pValue = pSaved
  End
  
End # Initialization ———————————————————————————

If MT == B0 # process any CC message, any channel
  # message is in M0..M2. M1 is the CC number, M2 is the value
  # LM1 is the saved value for this CC
  updateValue LM1 M2
End

Thank you for this.
Ill give it a go tomorrow.

alandalton72

@wim said:
What model of midi controller? Perhaps you can reconfigure it so the encoders send absolute rather than relative incremental messages.

It’s an Akai APC 40 Mk 2.
I’ll see if it can be reconfigured.

Thanks.