ref: 6f944b5bddfdea3f17e76128fc9f376fe2ce0998
parent: 1f07bdd657ec5113d783d01e5d7a650d8e9412cb
author: Paul Brossier <piem@piem.org>
date: Mon Oct 29 20:22:41 EDT 2018
[py] add note2freq to midiconv.py
--- a/python/lib/aubio/midiconv.py
+++ b/python/lib/aubio/midiconv.py
@@ -4,7 +4,7 @@
__all__ = ['note2midi', 'midi2note', 'freq2note']
import sys
-from ._aubio import freqtomidi
+from ._aubio import freqtomidi, miditofreq
py3 = sys.version_info[0] == 3
if py3:
@@ -75,3 +75,26 @@
" convert frequency in Hz to nearest note name, e.g. [0, 22050.] -> [C-1, G9] "
nearest_note = int(freqtomidi(freq) + .5)
return midi2note(nearest_note)
+
+def note2freq(note):
+ """Convert note name to corresponding frequency, in Hz.
+
+ Parameters
+ ----------
+ note : str
+ input note name
+
+ Returns
+ -------
+ freq : float [0, 23000[
+ frequency, in Hz
+
+ Example
+ -------
+ >>> aubio.note2freq('A4')+ 440
+ >>> aubio.note2freq('A3')+ 220.1
+ """
+ midi = note2midi(note)
+ return miditofreq(midi)