The spectrum and spectrogram of specific sound

[Haitong Z]

It seems that we can say it is ,for example, the vowel [a], just by looking at the spectrum, but not by the spectrogram. Why? And how can we recognise the sound through spectrum?

[Simon]

The spectrum and spectrogram are showing us exactly the same information. The spectrum is for a single frame of speech, and the spectrogram is for a sequence of frames (so will reveal changes in the spectrum over time).

We’ll go over this in main lecture 2.

[Author]

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