Added frequency and default key&scale

2023-02-13 01:21:55 +02:00
parent 4f019bfda4
commit 7cc89d3333
3 changed files with 24 additions and 10 deletions
--- a/ziffers/scale.py
+++ b/ziffers/scale.py
@ -44,6 +44,10 @@ def note_name_to_interval(name: str) -> int:
    interval = NOTES_TO_INTERVALS[values[0].capitalize()]
    return interval + modifier

+def midi_to_freq(note: int) -> float:
+    """Transform midi to frequency""" 
+    freq = 440 # Frequency of A
+    return (freq / 32) * (2 ** ((note - 9) / 12))

 def note_name_to_midi(name: str) -> int:
    """Parse note name to midi