sieves

---

Functions

gen_pitches_from_sieve

Generates pitches from a sieve (an abjad.Pattern object).

pang.sieves.gen_pitches_from_sieve(sieve, origin=0, low=0, high=12, pitch_range=None, multiplier=1)

Generates pitches from a sieve (an abjad.Pattern object). .. container:: example

A simple sieve:

>>> sieve = abjad.Pattern(indices=[0, 1, 7], period=12)
>>> pitches = pang.gen_pitches_from_sieve(sieve=sieve, origin=6, low=-12, high=11)
>>> print(pitches)
[-11, -6, -5, 1, 6, 7]

>>> maker = abjad.NoteMaker()
>>> notes = maker(pitches, [(1, 4)] * len(pitches))
>>> staff = abjad.Staff(notes)
>>> abjad.attach(abjad.Clef("bass"), staff[0])
>>> abjad.show(staff)  

Microtone sieves can also be created:

>>> sieve = abjad.Pattern(indices=[0, 3], period=10)
>>> pitches = pang.gen_pitches_from_sieve(
...     sieve=sieve, origin=0, low=0, high=11, multiplier=0.5
... )
>>> print(pitches)
[0.0, 1.5, 5.0, 6.5, 10.0]

>>> maker = abjad.NoteMaker()
>>> notes = maker(pitches, [(1, 4)] * len(pitches))
>>> staff = abjad.Staff(notes)
>>> abjad.show(staff)