Now after I play back these humpback calls, I'll play blue whale calls, but they have to be sped up because they're so low in frequency that you wouldn't be able to hear it otherwise.
이제 제가 혹고래 소리를 들려드린 후에, 흰긴수염고래 소리를 들려드릴 건데, 주파가 매우 낮아 들리질 않으니 속도를 빨리해서 재생해 보겠습니다.