The Analyzer uses a mathematical process called a Fast Fourier Transform (FFT) to provide a real-time curve of all frequency components in the incoming signal. This is superimposed over any EQ curves you have set. The Analyzer curve uses the same scale as the EQ curves, making it easy to recognize important frequencies in the incoming audio. This also simplifies the task of setting EQ curves to raise or lower the levels of frequencies or frequency ranges.
The bands derived from FFT analysis are scaled logarithmically—there are more bands in higher octaves than in lower octaves.
As soon as the Analyzer is activated, you can change the scaling from the default dynamic range of 60 dB. Drag vertically on the scale to the right of the graphic display to set the maximum value to anywhere between +20 dB and −80 dB. The Analyzer display is always dB-linear.
Note: High Analyzer resolutions require significantly more processing power. High resolution is necessary when attempting to accurately analyze very low bass frequencies, for example. It is recommended that you turn off the Analyzer or close the Channel EQ window after setting EQ parameters.