标题：求大虾相助peak amplitude的相关问题！！！！！！！急

Peak amplitude----The highest amplitude occurring in each 2-kHz band be-tween 0 and 10 kHz. Peak amplitudes were measured
at the beginning, middle, and end ofthe pulse (12.5ms from the beginning and 12.5 ms from the end）

求助大虾 这句话怎么理解，，不要英语翻译。。。要声学的解释。。太谢谢了。。