def dbsum(levels, axis=None):
    levels = np.asanyarray(levels)
    return 10.0 * np.log10((10.0**(levels/10.0)).sum(axis=axis))
Return the boolean value of the attribute having *attr_name*, or
dataset/ETHPy150Open python-acoustics/python-acoustics/acoustics/decibel.py/dbsum--crossover with--dataset/ETHPy150Open python-openxml/python-docx/docx/oxml/styles.py/CT_LatentStyles.bool_prop