assert multiplier >= 0
if (period_min == period_max) and (min_inter_symbol_distance == 0):
raise ValueError("If (period_min == period_max) a non-zero",
assert multiplier >= 0
if (period_min == period_max) and (min_inter_symbol_distance == 0):
raise ValueError("If (period_min == period_max) a non-zero",