pitchtools 1.2.0

Utilities to convert between midinotes, frequency and notenames

This module provides a set of functions to work with musical pitch. It enables to convert between frequenies, midinotes and notenames

Pitchtools

This module provides a set of functions to work with musical pitch. It enables to convert between frequenies, midinotes and notenames

Examples

Convert some note names to frequencies

>>> from pitchtools import *
>>> ebscale = "4Eb 4F 4G 4Ab 4Bb 5C 5D".split()
>>> for note in ebscale:
...     freq = n2f(note)
...     midinote = f2m(freq)
...     print(f"{note} = {freq:.1f}Hz (midinote = {midinote})")
4Eb = 312.5 Hz (midi = 63.0)
4F  = 350.8 Hz (midi = 65.0)
4G  = 393.7 Hz (midi = 67.0)
4Ab = 417.2 Hz (midi = 68.0)
4Bb = 468.3 Hz (midi = 70.0)
5C  = 525.6 Hz (midi = 72.0)
5D  = 590.0 Hz (midi = 74.0)

The same but with a different reference frequency

from pitchtools import *
ebscale = "4Eb 4F 4G 4Ab 4Bb 5C 5D".split()
cnv = Converter(a4=435)
for note in ebscale:
    # Convert to frequency with default a4=442 Hz
    freq = cnv.n2f(note)
    midinote = cnv.[Of2m(freq)
    print(f"{note} = {freq} Hz (midinote = {midinote})")

Microtones

>>> from pitchtools import *
>>> n2m("4C+")
60.5
>>> n2m("4Db-10")
60.9
>>> m2n(61.2)
4C#+20

Microtonal notation

Midinote	Notename
60.25	4C+25 / 4C>
60.45	4C+45
60.5	4C
60.75	4Db-25
61.5	4D-
61.80	4D-20
63	4D#
63.5	4D#+
63.7	4E-30