Factor structure coefficients from the discriminant function analysis (DFA) representing the correlations between the six acoustic variables and the respective discriminant functions (DF).

In the DFA, species was set as the grouping variable and the individual means of the six acoustic properties as the dependent variables.在判别函数分析（DFA）中，将物种设为分组变量，以六项声学属性的个体均值作为因变量。