Is there a name for these graphs?

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The discussion revolves around the lack of a specific name for 3D graphs that depict real vs imaginary vs time/frequency, which are useful for understanding Fourier transforms and complex signals. While terms like "Bode plot" and "waterfall plot" exist for certain types of graphs, the original poster notes that the 3D graphs they refer to do not have a widely recognized name. Participants mention that wavelets are commonly used in vibrational analysis, and the spectrogram is acknowledged as a type of waterfall plot. The conversation highlights a gap in terminology for these specific visualizations in signal processing. Overall, the need for a clear naming convention for these graphs is emphasized.
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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.
 
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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.
 
FredGarvin said:
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.
 
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