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Logic Pro 9 User Manual - Help Library - Apple

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• Playback Pre-Roll checkbox: When this option is selected, all start commands force<br />

<strong>Logic</strong> <strong>Pro</strong> to start playback a little earlier (shifted to the left). The exact pre-roll value<br />

depends on the current delay compensation value for plug-ins. This option ensures<br />

that transients that fall exactly on the start position are played back correctly. If this<br />

option is unselected, transients that fall precisely on the start position can be missed,<br />

or seem to fade in.<br />

• Sample Rate pop-up menu: Allows you to choose the sample rate for the project.<br />

• Surround Format pop-up menu: Allows you to choose the surround format for the<br />

project.<br />

• Pan Law pop-up menu: Signals panned to the center position may sound louder than<br />

signals panned hard left or right. The Pan Law value determines the amount of volume<br />

reduction on signals that are panned to the center position. You can choose from the<br />

following settings:<br />

• 0 dB: With no change to the volume level, signals will seem louder when panned to<br />

the center position, in comparison with extreme left or right pan positions.<br />

• –3 dB: A full scale signal (0 dBfs) will have a level of –3 dB when panned to the center<br />

position.<br />

• –3 dB compensated: A full scale signal (0 dBfs) will have a level of 0 dB when panned<br />

to the center position (or +3 dB when panned to extreme left or right positions).<br />

• Apply Pan Law Compensation to Stereo Balancers checkbox: Applies Pan Law<br />

compensation to Stereo Balance controls.<br />

Note: For compatibility purposes, this checkbox is selected by default for all older<br />

projects opened in <strong>Logic</strong> <strong>Pro</strong> 9.<br />

Chapter 43 <strong>Pro</strong>ject Settings in <strong>Logic</strong> <strong>Pro</strong><br />

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