librosa.hz_to_note

librosa.hz_to_note(frequencies, **kwargs)[source]

Convert one or more frequencies (in Hz) to the nearest note names.

Parameters
frequenciesfloat or iterable of float

Input frequencies, specified in Hz

kwargsadditional keyword arguments

Arguments passed through to midi_to_note

Returns
noteslist of str

notes[i] is the closest note name to frequency[i] (or frequency if the input is scalar)

Examples

Get a single note name for a frequency

>>> librosa.hz_to_note(440.0)
['A5']

Get multiple notes with cent deviation

>>> librosa.hz_to_note([32, 64], cents=True)
['C1-38', 'C2-38']

Get multiple notes, but suppress octave labels

>>> librosa.hz_to_note(440.0 * (2.0 ** np.linspace(0, 1, 12)),
...                    octave=False)
['A', 'A#', 'B', 'C', 'C#', 'D', 'E', 'F', 'F#', 'G', 'G#', 'A']