spectrogram

基本解释

The term "spectrogram" is borrowed from optics .
“聲譜圖”一詞是從光學借來的。
For cetaceans, the sound can be doing lots of other things that are not visible on a spectrogram, " says Fischer.
對鯨類來說，聲音還可以轉化成很多聲譜圖無法展現的形式，”菲捨爾說。
As you can see from this linear spectrogram of a minke whale's "boing" call, the detail gets smeared out and individual pulses cannot be distinguished.
就像你在這張小須鯨“啵嚶”聲的線性聲譜中看到的那樣，細節信息被模糊掉了，獨立的脈沖也很難分辨出來。

But audio experts say that the basic principles the CIA uses are likely the same ones that have driven the field of voice recognition since the 1940s: use of a spectrogram, a visual representation of the frequencies of human speech.
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