During this process heat energy first converts to unorderly sound waves, then to high frequency sound waves, finally ends up with low frequency sound waves.

• 这一过程中能量的转化是先从热能到杂乱的声波，接着转化为高频声波的能量，然后完成从高频能量到低频能量的转化，直到整个系统的稳定。