Tap tempo jitter

[seblleb]

Hi !

I tried a similar approach like here to measure time between 2 footswitch triggers:

Tap Tempo

Ah, yeah. I was thinking about the fact that the pedal usually controls aux by default, but I suppose you could change that. I’ll hopefully have an Ottobit Jr soon anyway, but Guitar2Arp really inspired me. Pedals that do arppegiation like Meris’ Ottobit, the Dwarfcraft Pitchgrinder, and the Molten Voltage G-Quencer for the DigiTech Whammy series are all $250-350! A tap tempo for this patch would be a great alternative!

after knowing the time I patched a metro obejct to send midi clocks with midiraw.

the problem is I get pretty bad clock jitter +/- 5 bpm which is 160ms.

it there a way to get better midi timing?
real time priority in linux?
is it important where the midi out is located in the patch?
I dont have very heavy processing going on. only byrds and a delay and bitcrusher

any ideas appreciated.

I’ll try a naked organelle patch with only metro triggering the midi msg.

[chrisk]

Hi, Here’s a Tap Tempo patch we are going to release soon:
Tap Tempo.zip (316.3 KB)

We’ll have a full manual soon but the basics are:

• Tap Aux or Foot Switch to enter tempo.
• Press Aux to view Aux Menu:
  – Aux + Low C#: Starts/Stops MIDI Clock Out
  – Aux + Low D#: Sends ‘Start’ Message
  – Aux + Low F#: Sends ‘Stop’ Message
• Low C: tempo nudge -
• Low D: tempo nudge +
• Knob1: Sets Tempo if you just want to dial in specific tempo (no tapping needed)
• Knob2: Fine Tune tempo ±1BPM in 0.1BPM steps
• Knob3: Audio Input Volume Thru
• Knob4: Metronome Volume