3.5

168MainStage Effects
MainStage MultiMeter Goniometer parameters
A goniometer helps you to judge the coherence of the stereo image and determine phase
differences between the left and right channels. Phase problems are easily spotted as
trace cancelations along the center line (M—mid/mono).
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° to produce a useful
visualization of the signal stereo phase.
The signal trace slowly fades to black, imitating the retro glow of the tubes found in older
goniometers, while also enhancing the readability of the display.
MultiMeter Goniometer parameters
• Goniometer button: Switch the main display to Goniometer mode.
• AutoGain knob and field: Set the amount of display compensation for low input levels.
You can set AutoGain levels in 10% increments or set it to off.
Note: To avoid confusion with the AutoGain parameter found in other included
effects and processors (such as the compressors), AutoGain is only used as a display
parameter in the meters. It increases display levels to enhance readability. It does not
change the actual audio levels.
• Decay knob and field: Determine the time it takes for the Goniometer trace to fade to
black.
MainStage MultiMeter Level and Loudness Meters
Level Meter displays the current signal level on a logarithmic decibel scale. The signal level
for each channel is represented by a blue bar. Signals (above the target level) approaching
the 0 dB level are represented by a yellow bar. When the level exceeds 0dB, the portion of
the bar above the 0dB point turns red.