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Chapter 14 Audio
The principle so far: For each channel, you determine which speakers the signal will be output to, either
totally or at a certain percentage. The surround impression is produced by the mix of all the channels in
the listener’s ear.
LFE Fader
The LFE channel operates the subwoofer, which is the surround system’s bass speaker. In the default con-
figuration, this fader is centered at 50 percent. The far left position represents 0 percent and the far right
represents 100 percent. The fader lets you determine what percentage of the signal will be sent to the LFE
channel.
Surround Lines on the Timeline
When you change the surround position of a channel or signal, something also changes on the Timeline.
Three surround rubberbands are visible on the Tr a c k - note that this is on the entire Tra c k , because sur-
round panning is track-specific and not clip-specific.
Surround rubberbands
The surround position is determined by two lines:
 One line represents movement along the X-axis (left/right) and the other along the Y-axis (front/
rear).
 The third line does not appear until you open the shortcut menu for the Audio Playback Column
(in the figure above, the column with the Speaker icon) and activate the LFE line display. This line
represents the signal’s bass enhancement, i.e. the component routed to the subwoofer.
When you change the surround position or LFE Fader, Key Frames are inserted at the Playline position.
Exception: There are as yet no Key Frames and the Playline is located at the very beginning
of the Time-
line. In this case, the lines are only moved up and down horizontally.