####################################################################################################
#
# Musica - A Music Theory Package for Python
# Copyright (C) 2017 Fabrice Salvaire
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
####################################################################################################
"""This module defines pitch standards.
"""
####################################################################################################
__all__ = [
'PitchStandard',
'A440',
]
####################################################################################################
[docs]class PitchStandard:
"""Class to define a pitch standard.
Octave are numbered according SPN and step (semitone) numbers lie from 0 to 11.
To define A440 use :code:`PitchStandard(name='A440', frequency=440, octave_number=4, step_number=9)`
"""
[docs] def __init__(self, name, frequency, octave, step_number):
self._name = name
self._frequency = frequency
self._octave = octave
self._step_number = step_number # Fixme: pitch class ?
##############################################
@property
def name(self):
return self._name
@property
def frequency(self):
return self._frequency
@property
def octave(self):
return self._octave
@property
def step_number(self):
return self._step_number
####################################################################################################
#: A440 or A4, also known as the Stuttgart pitch, which has a frequency of 440 Hz,
# is the musical note of A above middle C
# and serves as a general tuning standard for musical pitch.
A440 = PitchStandard(name='A440', frequency=440, octave=4, step_number=9)