pyknon 0.3 documentation

# Simplemusic and Pitch Class Sets

## Simplemusic

simplemusic.mod12(n)

    >>> simplemusic.mod12(13)
    1

simplemusic.interval(x, y)

  Return the numeric interval between two notes.

simplemusic.transposition(notes, index)

  Transpose a set of notes by a numerical index.

simplemusic.transposition_startswith(notes, start)

  Transpose a set of notes so it begins with start note.

simplemusic.is_related_by_transposition(notes1, notes2)

  Check if two groups of notes are related by transposition.

  We use brute force here; the best way is to check for the normal or prime forms.

simplemusic.inversion(notes, index=0)

  > Invert a set of notes though an inversion index.

  > The inversion index is not very musical. the function `inversion_startswith()` is probably more useful.

  simplemusic.inversion_startswith(notes, start)

    Invert a set of notes so it begins with start note.

    >>> simplemusic.inversion_startswith([0, 4, 7], 2)
    [2, 10, 7]

simplemusic.rotate_set(notes)

  Return all rotations of a collection of notes.

## Pitch Class Set

simplemusic.name_to_diatonic(note_string)

  Return a number from 0 to 6 for the note name without the accidental.

simplemusic.dotted_duration(duration, dots)

  Sn = a(1 - r^n)/1 - r where a is the first term, r is the common ration (1/2 in our case) and n is the number of terms.