Frequency unit conversion

hz_to_note	Convert one or more frequencies (in Hz) to the nearest note names.
hz_to_midi	Get MIDI note number(s) for given frequencies
hz_to_svara_h	Convert frequencies (in Hz) to Hindustani svara
hz_to_svara_c	Convert frequencies (in Hz) to Carnatic svara
hz_to_fjs	Convert one or more frequencies (in Hz) from a just intonation scale to notes in FJS notation.
midi_to_hz	Get the frequency (Hz) of MIDI note(s)
midi_to_note	Convert one or more MIDI numbers to note strings.
midi_to_svara_h	Convert MIDI numbers to Hindustani svara
midi_to_svara_c	Convert MIDI numbers to Carnatic svara within a given melakarta raga
note_to_hz	Convert one or more note names to frequency (Hz)
note_to_midi	Convert one or more spelled notes to MIDI number(s).
note_to_svara_h	Convert western notes to Hindustani svara
note_to_svara_c	Convert western notes to Carnatic svara
hz_to_mel	Convert Hz to Mels
hz_to_octs	Convert frequencies (Hz) to (fractional) octave numbers.
mel_to_hz	Convert mel bin numbers to frequencies
octs_to_hz	Convert octaves numbers to frequencies.
A4_to_tuning	Convert a reference pitch frequency (e.g., A4=435) to a tuning estimation, in fractions of a bin per octave.
tuning_to_A4	Convert a tuning deviation (from 0) to a reference pitch frequency relative to A440.