Spectrogram View in SIGVIEW provides a top-down, two-dimensional representation of the 3D spectrum display, offering a clearer and more intuitive way to analyze time-frequency data. This view shows frequency on the vertical axis, time on the horizontal axis, and uses color intensity to represent amplitude - making it ideal for detailed inspection of signal changes over time.

To switch to Spectrogram View, go to “3D Tools > Spectrogram view” in the menu or click the corresponding button on the toolbar.

All standard 3D operations - such as cursor interaction, zooming, and color adjustments remain available in this view. Additionally:

  • Draw a rectangle with the mouse to quickly zoom into a specific region of the spectrogram.
  • Use the mouse wheel for fast zooming in or out.
  • Hold Ctrl while drawing a rectangle to measure its dimensions without zooming.



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The time axis is always shown from left to right (X-axis). The direction of the frequency axis (Y-axis) can be changed by using the main menu option "3D Tools/Spectrogram frequency direction".


If you move your mouse cursor over spectrogram view, current X/Y values under the cursor will be displayed as a tooltip.


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