Strumboli

Turn your drawing tablet into a MIDI strumming controller

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Trigger notes when lifting the stylus

Strum Release

Trigger a MIDI note when the stylus lifts from the tablet. This is particularly useful for adding percussion sounds or effects on release.

Settings

active

Type: boolean
Default: false
Description: Enable strum release trigger

Examples:

{
  "strumRelease": {
    "active": true
  }
}

Useful for triggering percussion sounds on release.

midiNote

Type: integer
Default: 38
Range: 0-127
Description: MIDI note number to trigger on release

Examples:

{
  "strumRelease": {
    "midiNote": 42
  }
}

Common percussion notes (General MIDI):

  • 36 - Bass Drum
  • 38 - Snare Drum (default)
  • 42 - Closed Hi-Hat
  • 46 - Open Hi-Hat
  • 49 - Crash Cymbal
  • 51 - Ride Cymbal

midiChannel

Type: integer or null
Default: null
Range: 1-16
Description: MIDI channel for release trigger

Examples:

{
  "strumRelease": {
    "midiChannel": 10
  }
}

Channel 10 is typically drums in General MIDI.

maxDuration

Type: float
Default: 0.25
Range: > 0
Units: Seconds
Description: Maximum time since last contact to trigger release

Examples:

{
  "strumRelease": {
    "maxDuration": 0.5
  }
}

Prevents triggering on very long strums or when leaving the stylus hovering.

velocityMultiplier

Type: float
Default: 1.0
Range: > 0
Description: Multiplier for release note velocity

Examples:

{
  "strumRelease": {
    "velocityMultiplier": 2.0
  }
}

Higher values = louder release triggers.

Configuration Example

{
  "strumRelease": {
    "active": false,
    "midiNote": 38,
    "midiChannel": 10,
    "maxDuration": 0.25,
    "velocityMultiplier": 1.0
  }
}

Usage Examples

Snare on Release

{
  "strumRelease": {
    "active": true,
    "midiNote": 38,
    "midiChannel": 10,
    "velocityMultiplier": 1.5
  }
}

Hi-Hat Pattern

{
  "strumRelease": {
    "active": true,
    "midiNote": 42,
    "midiChannel": 10,
    "maxDuration": 0.15,
    "velocityMultiplier": 0.8
  }
}

Cymbal Accents

{
  "strumRelease": {
    "active": true,
    "midiNote": 49,
    "midiChannel": 10,
    "maxDuration": 0.5,
    "velocityMultiplier": 2.5
  }
}

Subtle Release Click

{
  "strumRelease": {
    "active": true,
    "midiNote": 42,
    "midiChannel": 10,
    "maxDuration": 0.1,
    "velocityMultiplier": 0.3
  }
}

General MIDI Percussion Map

Note Sound
35 Acoustic Bass Drum
36 Bass Drum 1
37 Side Stick
38 Acoustic Snare
39 Hand Clap
40 Electric Snare
41 Low Floor Tom
42 Closed Hi-Hat
43 High Floor Tom
44 Pedal Hi-Hat
45 Low Tom
46 Open Hi-Hat
47 Low-Mid Tom
48 Hi-Mid Tom
49 Crash Cymbal 1
50 High Tom
51 Ride Cymbal 1
52 Chinese Cymbal
53 Ride Bell

Related Documentation