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164 Chapter 12 Helper
These features are useful when analyzing highly compressed material, as you can
identify smaller level differences more easily by moving and/or reducing the display
range.
Mode
There are three display response modes: RMS slow, fast, and Peak.
The two RMS modes with slow and fast response settings show the effective signal
average (“Root Mean Square”), and provide a good representative overview of the
perceived volume levels. The Peak mode shows level peaks accurately.
Goniometer
The idea of the Goniometer was born with the advent of early two channel
oscilloscopes. To use such devices as Goniometers, users would connect the left and
the right stereo channels to the X and Y inputs, while rotating the display by 45
degrees. This would result in a useful visualization of the signal’s stereo phase.
A Goniometer helps you to judge the coherence of the stereo image. Phase problems
are easily spotted as trace cancellations along the center line (M—mid/mono).
The signal trace slowly fades to black. Not only does this imitate the retro glow of the
tubes found in older Goniometers, it also significantly enhances the readability of the
tool.
Goniometer Button
This button activates the Goniometer (and deactivates the Analyzer).
Auto Gain
In order to obtain a higher readout on low-level passages, you can use the Auto Gain
display parameter. When activated, this parameter allows the display to automatically
compensate for low input levels. The amount of compensation can also be set with the
Auto Gain parameter. The Auto Gain parameter can also be adjusted by click-holding
and dragging directly in the display area of the Goniometer.