10.6

28Logic Pro Instruments
When the Loop Mode pop-up menu and field (see entry below) is set to Start/End or
Start/Length, the Position (and Speed) knob is replaced with the following two controls:
• Loop Start knob: Determine the playback start position in the audio data. A value of
0% indicates the absolute start point of the audio data. A value of 100% indicates the
absolute end point.
• Loop End/Length knob: Loop End sets the playback end point. Loop Length
determines the playback length, expressed as a percentage of the overall length of
the sample.
• Speed knob: Set the audio data playback rate in additive, spectral, or granular mode.
Speed has no effect when the element is set to sampler mode. A setting of 100%
represents the original playback rate. Higher settings (up to 500%) represent faster
playback, while lower settings (down to 0%) represent slower playback.
Playback begins at the point set with the Position knob and travels through the audio
data on a path determined by the Loop mode. Speed determines the rate of this travel.
Playback remains at the normal pitch regardless of the rate of travel. Set Speed to 0%
to halt playback at the point set with the Position knob.
• Keyscale pop-up menu and field: Choose from three key scaling options that affect
source pitch response to incoming MIDI data.
• Key+PBend: The pitch of the source responds to MIDI note and pitchbend data.
• Key: The pitch of the source responds to MIDI note data but does not respond to
pitchbend data.
• Off: The pitch of the source does not respond to either MIDI note or pitchbend data.
Note: Global pitchbend behavior is determined with the PitchBend Up and Down
controls in the master voice section. See Logic Pro Alchemy master voice section.
• Loop Mode pop-up menu and field: Choose from five loop mode options that affect
playback of the source audio data.
• None: Ignores the loop start and end points, and plays the entire sound once without
looping.
• Continuous: Plays from the beginning, enters the loop region, and loops continuously
in a forward direction while a note is held and during the envelope release phase.
• Sustain: Plays from the beginning, enters the loop region, loops continuously while a
note is held, and exits the loop region to play the normal sound release phase.
• Forward/Back: Like Continuous, but plays the loop region alternately forward and
backward.
• Start/End: In this mode, playback starts from the defined start point, playing at 100%
speed to the defined loop end position, then skips to the start point and repeats.
These positions are set with the Loop Start and Loop End knobs (see entries above).
Note off messages have no impact on loop repetitions. If the loop end point is placed
before the loop start point, playback is reversed (backwards to the loop end point)
when the loop start point is reached.
• Start/Length: In this mode, playback starts from the defined start point, playing
at 100% speed to the defined loop end position, then skips to the start point and
repeats. The length of the loop, controlled with the Loop Length knob, is set as a
percentage of the overall length of the sound, such that loop end point is equal to
the loop start point plus loop length.