librosax.feature.note_to_hz¶

note_to_hz(note: str, **kwargs: Any) → floating[Any][source]¶

note_to_hz(note: List[str] | Tuple[str, ...] | Generator[str, None, None], **kwargs: Any) → Array

Convert one or more note names to frequency (Hz).

Parameters:

note – One or more note names to convert.
**kwargs – Additional parameters to note_to_midi.

Returns:

Array of frequencies (in Hz) corresponding to note.

See also

midi_to_hz: Convert MIDI note numbers to frequencies. note_to_midi: Convert note names to MIDI numbers. hz_to_note: Convert frequencies to note names.

Examples

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