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Table Of Contents
Sum and Max buttons: Determine whether a summed or maximum level is displayed
in the Analyzer results in the main display. These buttons are relevant only when
multiple channels are selected with the channel buttons.
Channel buttons: Used to select a single channel or a combination of channels for
metering. The number and appearance of these buttons varies when different surround
modes are chosen.
View fields: Alter the way that values are shown in the Analyzer by setting the maximum
level displayed (Top) and the overall dynamic range (Range).
Mode buttons: Determine how levels are displayed. You can choose from Peak, Slow
RMS, or Fast RMS characteristics.
The two RMS modes show the effective signal average, and provide a representative
overview of perceived volume levels.
The Peak mode shows level peaks accurately.
Scale (shown in the main display): Indicates the scale of levels. Adjusting the scale is
useful when analyzing highly compressed material, as it makes it easier to identify small
level differences. Drag vertically on the scale to adjust it.
Using the Surround MultiMeter Goniometer
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’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.
98 Chapter 7 Metering Tools