What can I know from the spectrogram of mp3 and wav file

I have plotted the spectrogram for an audio in mp3 and wav file as shown in Figure 1 and 2 respectively.

Does it means that wav file has higher audible frequency range which is in brighter color while mp3 is in dark blue which has lower frequency?

Figure 1: mp3 spectrogram

Figure 2: wav spectrogram

Thank you.

Answer 1

[Daniel M]

It's difficult to say given that they are plotted with two different colorbar axes limits. Set them to be the same and you can verify it easier visually. Try

colorbar;
caxis([-200 0])

Do that for each plot.