def METHOD_NAME() -> float:
    bw_type = settings.read("bandpass_filter_bw_type", "Medium", str)
    if bw_type in Filter.BANDWIDTHS:
        return Filter.BANDWIDTHS[bw_type]
    if bw_type.lower() == "custom":
        return settings.read("bandpass_filter_custom_bw", 0.1, float)
    return 0.08