The song of Rana nigromaculata was composed of four pulses,the pulse rate(PR) was 8-11 times/sec,the duration of each song was about 370-510 ms,each pulse had three power peaks,and the frequency of highest power peak was between 2.0 and 2.4 kHz.
英
美
- 黑斑蛙鸣声一般由4个较长的脉冲组成，每个脉冲持续时间30－50ms，脉冲率（PR）8－11个/s。 每声持续时间370－510ms，各脉冲的能量主要集中在3个能峰上，主能峰位于2.；0－2
