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Logic Pro 9 User Manual - Help Library - Apple

Logic Pro 9 User Manual - Help Library - Apple

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1330 Glossary<br />

pan, pan position The placement of mono audio signals in the stereo field, by setting<br />

different levels on both sides (see Balance).<br />

Pan control Rotary knob (directly above the Level fader) on mono channel strips, that<br />

determines the position of the signal in the stereo image.<br />

Parameter box Field on the left side of <strong>Logic</strong> <strong>Pro</strong> windows (or in the Inspector). It is used<br />

to adjust the parameters of the selected track, regions, events, or objects. Also see<br />

Inspector.<br />

peak 1) The highest level in an audio signal. 2) Portions of a digital audio signal that<br />

exceed 0 dB, resulting in clipping. You can use the <strong>Logic</strong> <strong>Pro</strong> level meter facilities to locate<br />

peaks and remove or avoid clipping. The Search Peak command in the Sample Editor<br />

Functions menu searches for the sample bit with the greatest amplitude value.<br />

peak level display A digital audio meter that displays the absolute volume of an audio<br />

signal as it plays. So named because every peak in the signal can be accurately seen.<br />

Pencil tool Tool used to create empty MIDI regions in the Arrange area. It can also be<br />

used to add audio regions to the Arrange area, when used in conjunction with the Shift<br />

key. In the Sample Editor, the Pencil can be used to draw out transient signal spikes (pops<br />

and clicks) in signals.<br />

Piano Roll Editor A MIDI event editor that displays note events as horizontal beams.<br />

Events can be cut, copied, moved, and resized in a similar fashion to regions in the Arrange<br />

area.<br />

pink noise A harmonic noise type that contains more energy in the lower-frequency<br />

range.<br />

pitch The perceived highness (treble) or lowness (bass) of a musical sound. Corresponds<br />

to the frequency of the sound wave.<br />

pitch bend message MIDI message transmitted by the pitch bend wheel of a MIDI<br />

keyboard.<br />

playback Playing an audio or MIDI region, an audio file, or an entire arrangement, allowing<br />

you to hear it.<br />

playhead The playhead is a vertical white line that indicates the current playback position<br />

in all horizontal, time-based <strong>Logic</strong> <strong>Pro</strong> windows (the Arrange area, for example). The<br />

playhead can be directly grabbed and moved with the mouse (see scrubbing).<br />

plug-in Software application that enhances the functionality of the main program (in<br />

this case, <strong>Logic</strong> <strong>Pro</strong>). <strong>Logic</strong> <strong>Pro</strong> plug-ins are typically software instruments or effects.

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