def midi_to_hz(notes):
return <NUM_LIT> * (<NUM_LIT> ** ((np.asanyarray(notes) - <NUM_LIT>)/<NUM_LIT>))<EOL>
Get the frequency (Hz) of MIDI note(s)

    Examples
    --------
    >>> librosa.midi_to_hz(36)
    65.406

    >>> librosa.midi_to_hz(np.arange(36, 48))
    array([  65.406,   69.296,   73.416,   77.782,   82.407,
             87.307,   92.499,   97.999,  103.826,  110.   ,
            116.541,  123.471])

    Parameters
    ----------
    notes       : int or np.ndarray [shape=(n,), dtype=int]
        midi number(s) of the note(s)

    Returns
    -------
    frequency   : number or np.ndarray [shape=(n,), dtype=float]
        frequency (frequencies) of `notes` in Hz

    See Also
    --------
    hz_to_midi
    note_to_hz