Impulse Tracker Effect Commands

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(c) Jeffrey Lim



Volume Column Effects

  • Ax - Volume slide up
  • Bx - Volume slide down
  • Cx - Fine volume slide up
  • Dx - Fine volume slide down
  • Ex - Pitch slide down
  • Fx - Pitch slide up
  • Gx - Portament to
  • Hx - Vibrato with speed x



General Effects

  • Axx - Set speed (set number of frames per row)
  • Bxx - Jump to order
  • Cxx - Break to row xx of (next) pattern
  • Dxy - Volume slide, x=0 down; y=0 up; x=F fine down; y=F fine up
  • Exx - Pitch slide down by xx
  • EFx - Fine pitch slide down by x
  • EEx - Extra fine pitch slide down by x
  • Fxx - Pitch slide up by xx
  • FFx - Fine pitch slide down by x
  • FEx - Extra fine pitch slide down by x
  • Gxx - Portamento to note with speed xx
  • Hxy - Vibrato with speed x, depth y
  • Ixy - Tremor with ontime x, offtime y
  • Jxy - Arpeggio with halftones x and y
  • Kxy - Dual command: H00 and Dxy
  • Lxy - Dual command: G00 and Dxy
  • Mxx - Set channel volume to xx (0->40h)
  • Nxy - Channel volume slide, x=0 down; y=0 up; x=F fine down; y=F fine up
  • Oxx - Set sample offset to xx00h
  • Pxy - Panning slide, x=0 right; y=0 left; x=F fine right; y=F fine left
  • Qxy - Retrigger note every y frames with volume modifier x
  • Values for x:

0: (nothing) 4: -8 8: (nothing) C: +8 1: -1 5: -16 9: +1 D: +16 2: -2 6: *2/3 A: +2 E: *3/2 3: -4 7: *1/2 B: +4 F: *2

  • Rxy - Tremelo with speed x, depth y
  • S3x - Set vibrato waveform
  • S4x - Set tremelo waveform
  • S5x - Set panbrello waveform
  • Waveforms for x in S3x, S4x and S5x:

0 = Sine 2 = Square 1 = Ramp down 3 = Random

  • S6x - Pattern delay for x frames
  • S7x - Instrument functions
  • Values for x in S7x:

0: Past note cut 5: Set NNA to note off 1: Past note off 6: Set NNA to note fade 2: Past note fade 7: Turn off volume envelope 3: Set NNA to note cut 8: Turn on volume envelope 4: Set NNA to continue


  • S8x - Set pan position
  • S91 - Set surround sound
  • SB0 - Set loopback point
  • SBx - Loop x times to loopback point
  • SCx - Note cut after x frames
  • SDx - Note delay for x frames
  • SEx - Pattern delay for x rows
  • SFx - Select parameterised MIDI Macro
  • T0x - Tempo slide down by x
  • T1x - Tempo slide up by x
  • Txx - Set tempo (20h->0FFh)
  • Uxy - Fine vibrato with speed x, depth y
  • Vxx - Set global volume to xx (0->80h)
  • Wxx - Global volume slide, x=0 down; y=0 up; x=F fine down; y=F fine up
  • Xxx - Set panning position (0->0FFh)
  • Yxy - Panbrello with speed x, depth y
  • Zxx - MIDI Macro - check MIDI.TXT
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