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.. _simplemusic:
==================================
Simplemusic and Pitch Class Sets
==================================
Simplemusic
===========
.. autofunction:: simplemusic.mod12
>>> simplemusic.mod12(13)
1
.. autofunction:: simplemusic.interval
Return the numeric interval between two notes.
.. autofunction:: simplemusic.transposition
Transpose a set of notes by a numerical index.
.. autofunction:: simplemusic.transposition_startswith
Transpose a set of notes so it begins with `start` note.
.. autofunction:: simplemusic.is_related_by_transposition
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.
.. autofunction:: simplemusic.inversion
Invert a set of notes though an inversion index.
The inversion index is not very musical. the function
:func:`inversion_startswith` is probably more useful.
.. autofunction:: simplemusic.inversion_startswith
Invert a set of notes so it begins with `start` note.
>>> simplemusic.inversion_startswith([0, 4, 7], 2)
[2, 10, 7]
.. autofunction:: simplemusic.rotate_set
Return all rotations of a collection of notes.
Pitch Class Set
===============
.. autofunction:: simplemusic.name_to_diatonic
Return a number from 0 to 6 for the note name without the accidental.
.. autofunction:: simplemusic.dotted_duration
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.
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