def fileFormatSampleFreq(sampleFreq: float) ->str:
    """Provide a consistent way to represent floating numbers in filenames

    Parameters
    ----------
    sampleFreq : float
        The sampling frequency
    
    Returns
    -------
    str
        Float converted for string for the purposes of a filename
    """
    sampleFreqStr: str = '{:.3f}'.format(sampleFreq)
    return sampleFreqStr.replace('.', '_')
