In the attracting song in male cricket, each single call ( SC) contains 7.6 beats in average, each contains two pulse series groups and each group contains four main amplitude-modulation pulse trains. 雄蟋招引声的每个单次叫声(SC)平均含有7.6个节拍,每个含有2个脉冲列组,每组含有4个主要的调幅脉冲列.每个SC的声长、间隔和平均重复周期(?)