librosa.core.note_to_hz

librosa.core.note_to_hz(note, **kwargs)

Convert one or more note names to frequency (Hz)

Parameters:

note : str or iterable of str

One or more note names to convert

kwargs : additional keyword arguments

Additional parameters to note_to_midi

Returns:

frequencies : number or np.ndarray [shape=(len(note),)]

Array of frequencies (in Hz) corresponding to note

See also

midi_to_hz, note_to_midi, hz_to_note

Examples

>>> # Get the frequency of a note
>>> librosa.note_to_hz('C')
array([ 16.352])
>>> # Or multiple notes
>>> librosa.note_to_hz(['A3', 'A4', 'A5'])
array([ 220.,  440.,  880.])
>>> # Or notes with tuning deviations
>>> librosa.note_to_hz('C2-32', round_midi=False)
array([ 64.209])