10.6

156Logic Pro Effects
• Spread slider and field: Determine the spread of the stereo base in LR input signals or
set the side signal level in MS input signals. Spread parameter behavior changes when
fed LR or MS signals. These differences are outlined below:
When you are working with LR signals:
• At a neutral value of 1, the left side of the signal is positioned precisely to the left
and the right side precisely to the right. As you decrease the Spread value, the
two sides move toward the center of the stereo image.
• A value of 0 produces a summed mono signal—both sides of the input signal are
routed to the two outputs at the same level. At values greater than 1, the stereo
base is extended out to an imaginary point beyond the spatial limits of the speakers.
When you are working with MS signals:
• Values of 1 or higher increase the level of the side signal, making it louder than the
middle signal.
• At a value of 2, you hear only the side signal.
• Split button: Split the signal into independently controlled high and low ranges.
• Crossover field: Set the frequency where the signal is split between high and low ranges.
To type a value, drag vertically or double-click.
• Direction High/Low knobs and fields: Independently set the central pan position for the
recorded stereo signal in the upper or lower frequency range (set with Crossover).
• Spread High/Low sliders and fields: Independently set the stereo spread in LR signals
or set the side signal level in MS signals for the upper/lower frequency range (set
with Crossover).
Stereo miking techniques
There are three commonly used stereo miking variations used in recording: AB, XY, and
MS. A stereo recording contains two channel signals.
AB and XY recordings both record left and right channel signals, but the middle signal is
the result of combining both channels.
MS recordings record a middle signal, but the left and right channels are decoded from the
side signal, which is the sum of both left and right channel signals.