def f_pitch(p, pitch_ref=69, freq_ref=440.0):
    """Computes the center frequency/ies of a MIDI pitch

    Notebook: C3/C3S1_SpecLogFreq-Chromagram.ipynb

    Args:
        p (float): MIDI pitch value(s)
        pitch_ref (float): Reference pitch (default: 69)
        freq_ref (float): Frequency of reference pitch (default: 440.0)

    Returns:
        freqs (float): Frequency value(s)
    """
    return 2 ** ((p - pitch_ref) / 12) * freq_ref