b12 / b40

When this checkbox is checked, the chordal analysis is based on 12 semitones per octave. This means that the analysis does not distinguish between C# and Bb, or D# and Eb, and so on.

When this checkbox is unchecked, the chordal analysis is based on 40 semitones per octave. Using this division the analysis will treat a C# as a separate note from Db, and C## as a separate note from D, and also Dbb will be a different note from C. All single and double alterations will be properly handled. This means that [CEG_B] will get the chord label Cdom7, while [CEG^A] gets Cmaj (may be it should get Cmaj6#, but that template is not included) (in ABC notation ABC notation A-sharp is notated as ^A, while B-flat is notated as _B, see)

When a MIDI file is analysed this checkbox will always be checked, because the MIDI standard is based on 12 notes per octave.

metEet

This checkbox enables an optimization where short notes in long segments get a penalty when scores of all fitting chord templates are compared. This option is only available when b12/b40 is unchecked

metKey

This checkbox enables an optimization where the major (or minor) chord of the current key gets an extra bonus when scores of all fitting chord templates are compared. The current key is computed for all segments where chord templates are fitted and may be different from the key signature. This option is only available when b12/b40 is unchecked. This option sometimes causes chord labels to be assigned too early. For instance, when analyzing: [CEG] E E E | [EGB E E E] |, the Emin label is already assigned at the third beat of the first (Cmaj) measure. Without this option, Emin starts at the correct first bead of the second measure. Still, this option appears to improve the number of correctly assigned chord labels in a larger benchmark.

chords with notes

This option adds an extra stave to the score with all chord labels expanded to three or four notes, depending on the label. For instance, Cmaj will expand to CEG and Cdom7 will expand to CEGBb.

wide chords

When this option is checked, chord labels are translated to notes spanning two octaves. For instance, the chord [CEG] will be shown as [CGe], where e is one octave higher than E (see ABC standard)

bass

When this option is checked, the chord staff is shown with a bass key (F). Otherwise the chord staff has a trebble key (G)

split

When the root note of a chord is below the split note, the whole chord is transposed an octave down. This option lets you select the split note: C is the lowest note and B is the highest note. For instance, the chord [GBd], whould be transposed an octave down to [G,B,D] (see ABC standard) when the selected split note is A or B. Because only A and B are above G

HTML

This radio button displays a table view of the analysis, including a key scape. The columns of the table are explained in chord analysis. The time column shows the number of quarter notes that have elapsed since the beginning of the score.

text

This radio button displays a more detailed linear time view of the chord analysis. It displays every segment of the analysis together with the notes sounding during this segment. During a segment no notes are raised (stop sounding) and no notes are pressed (start sounding).

choose file

This is the standard file chooser, where you can browse and select a file on you local computer.

ABC save

This button allows you to save the score window as ABC file. Chord labels are always included as a separate chord track. The expanded chord notes are also saved in the chord track when the relevant option is checked

to clip

Saves the ABC text to the clipboard. The ABC text is the same as the data saved to file.