Is there a name for these graphs?

[Omegatron]

This is sort of a math question, sort of a signal processing engineering question.

I've found 3D graphs of real vs imaginary vs time/frequency to be very helpful in my understanding of Fourier transforms, complex signals, and the like. Is there a convenient/clever name for these graphs? I don't see them used very often, which I think is a bad thing.

Examples: http://www.complextoreal.com/tfft2_files/image016.gif"

For instance, http://www.vnij.com/company/press/image_library/full_res/spectrogram.gif" isn't called "graph of frequency and phase vs amplitude on logarithmic axes"; it's called a "Bode plot".

Just wondering.

 

[FredGarvin]

I have not seen names for the first few plots you show. However, wavelts are quite common in vibrational analysis and that is what I have seen the majority of them referred to as.

The spectrogram you posted is also known as a waterfall plot. Although, I haven't seen one quite in that format. It is the same information, a spectrum in the frequency domain plotted against a time axis.

 

[Omegatron]

The spectrogram you posted is also known as a waterfall plot. Although, I haven't seen one quite in that format. It is the same information, a spectrum in the frequency domain plotted against a time axis.

Yeah. I think a waterfall plot is just a specific type of spectrogram plot.