Soundtrack Pro 3 Effects Reference (en).pdf - Help Library - Apple
Soundtrack Pro 3 Effects Reference (en).pdf - Help Library - Apple
Soundtrack Pro 3 Effects Reference (en).pdf - Help Library - Apple
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98 Chapter 7 Metering Tools<br />
• Sum and Max buttons: Determine whether a summed or maximum level is displayed<br />
in the Analyzer results in the main display. These buttons are relevant only wh<strong>en</strong><br />
multiple channels are selected with the channel buttons.<br />
• Channel buttons: Used to select a single channel or a combination of channels for<br />
metering. The number and appearance of these buttons varies wh<strong>en</strong> differ<strong>en</strong>t surround<br />
modes are chos<strong>en</strong>.<br />
• View fields: Alter the way that values are shown in the Analyzer by setting the maximum<br />
level displayed (Top) and the overall dynamic range (Range).<br />
• Mode buttons: Determine how levels are displayed. You can choose from Peak, Slow<br />
RMS, or Fast RMS characteristics.<br />
• The two RMS modes show the effective signal average, and provide a repres<strong>en</strong>tative<br />
overview of perceived volume levels.<br />
• The Peak mode shows level peaks accurately.<br />
• Scale (shown in the main display): Indicates the scale of levels. Adjusting the scale is<br />
useful wh<strong>en</strong> analyzing highly compressed material, as it makes it easier to id<strong>en</strong>tify small<br />
level differ<strong>en</strong>ces. Drag vertically on the scale to adjust it.<br />
Using the Surround MultiMeter Goniometer<br />
A goniometer helps you to judge the coher<strong>en</strong>ce of the stereo image and determine phase<br />
differ<strong>en</strong>ces betwe<strong>en</strong> the left and right channels. Phase problems are easily spotted as<br />
trace cancelations along the c<strong>en</strong>ter line (M—mid/mono).<br />
The idea of the goniometer was born with the adv<strong>en</strong>t of early two-channel oscilloscopes.<br />
To use such devices as goniometers, users would connect the left and the right stereo<br />
channels to the X and Y inputs, while rotating the display by 45° to produce a useful<br />
visualization of the signal’s stereo phase. The signal trace slowly fades to black, imitating<br />
the retro glow of the tubes found in older goniometers, while also <strong>en</strong>hancing the<br />
readability of the display.