“声频谱”的简称。组成各部分正弦波的幅值或按频率大小排列相位的图形【理】acoustic spectrum

• 这些形似花朵的图片并不是用计算机制作出的图案，而是工程师用软件记录动物声谱后绘制的图形。

  These pictures, which look like flowers, are not made by computers, but were drawn by engineers after using software to record the acoustic spectrum of animals.