CARL Help

Basic actions

The File menu in CARL will let you Save and Open files as well as Export the whole song into a .wav file.

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Rewind, Stop, Play, Click on/off, Record

SONG editorScreen Shot 2016-04-17 at 5.12.14 PM

  • Add Track – Add a new empty track with default instrument settings
  • Remove Track – Remove the selected track
  • Tempo – Set song global tempo
  • Q – Set quantization resolution
  • Quantize – Quantize the selected sequences
  • Quant on Rec – Quantize every note already when recording

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You can also drag sequences on the timeline – they will snap into the selected Quantization (Q) value. Holding down ⌘CMD will copy the sequence instead of moving it.

Note that you can move / copy multiple sequences at the same time. Holding down ⇪SHIFT will let you multi-select, then ⌘CMD and drag to copy, or just drag to move.

SEQUENCE editor
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  • Pen – Draw notes (click and drag)
  • Eraser – Remove notes
  • Select – Box select notes (default tool)
  • (dropdown) – Quantization resolution
  • Q – Quantize selected notes

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Clicking and dragging the notes from their start / end will change the length, and dragging from the middle will move the note.

Tracker editor

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  • Play – Just play notes, don’t modify the sequence
  • Edit – When pressing down on a note key, insert that note under the playhead / selected track
  • Resolution – Change the resolution of individual row in tracker editor
  • Follow – Change the displayed sequence depending on what’s currently under the playhead in Song Editor
  • Loop – When playing and reach the end of the active sequence in Tracker Editor, loop to the beginning of the sequence.

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Note entry is done the same way as if recording, but with a few additions:

  • ~` or º§ key – insert Note Off event (===)
  • . or delete or backspace – remove the instruction currently under the playhead (. . .)
  • tab – Go to the next track
  • tab – Go to the previous track
  • – Transpose keyboard note entry one octave lower
  • + – Transpose keyboard note entry one octave higher

Global keyboard shortcuts

  • , – Go to the beginning of the song
  • space – Play / Stop
  • ⌘+ – Zoom in
  • ⌘- – Zoom out

Setting up Audio/MIDI

  • Screen Shot 2016-04-17 at 5.11.59 PMMIDI input – currently active MIDI input device for note entry and key jazz
  • Audio buffer size – The size of the precalculated audio, lower means less latency
  • Audio rate – Playback and Export audio rate