Spectrum on the main console

Spectrum expands on the main console instead of opening a separate dead-end screen. See frequency strength, freeze a trace, and view octave bands while the same measurement keeps running.

What it shows

FFT bars show relative frequency strength. A dominant-peak marker and freeze let you compare a frozen trace with the live one. Octave bands sum energy into octave centers. Labels keep fixed heights so the layout does not jump.

What it is not

Octave bars are not a certified real-time analyzer. Phone frequency response, automatic gain and room acoustics all shape the picture. Use Spectrum to compare relative peaks on the same phone and setup, not to certify a room or a product.