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Chapter 8 Metering tools 15 0
MultiMeter Goniometer parameters
A goniometer helps you to judge the coherence of the stereo image and determine phase
dierences 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’s
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: Switches the main display to Goniometer mode.
•
Auto Gain eld: Drag to set the amount of display compensation for low input levels. You can
set Auto Gain levels in 10% increments or set it to o.
Note: To avoid confusion with the Auto Gain parameter found in other Logic Pro eects
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 eld: Drag to determine the time it takes for the Goniometer trace to fade to black.