The following lists the Auto Sampler controls, with brief descriptions of their functions.
Range Start field and slider: Drag vertically to set the lowest note of the key range. You can also drag the left Sample Note Range handle in the keyboard display.
Range End field and slider: Drag vertically to set the highest note of the key range. You can also drag the right Sample Note Range handle in the keyboard display.
Sample Every field and slider: Drag vertically to set the interval between sampled notes in semitones.
Sustain field and slider: Drag vertically to set the time the note is sampled (before its release phase begins) in seconds. Percussion and other short-duration sounds are shortened after sampling if the end contains complete silence.
For notes (pitched sounds), a Sustain value of 10 seconds or more is recommended.
Velocity Layers pop-up menu: Choose the number of velocity layers to sample. The default is 1. To sample multiple velocity layers, the source instrument must respond to MIDI Velocity as well as MIDI Note messages.
Velocity Response pop-up menu: When multiple velocity layers are sampled, choose one of the following velocity response curves:
Linear: Divides the Velocity span region equally. This is the default, and is recommended for most situations.
Exp1-Exp3: Gradually render the Velocity curve more exponential. After the Velocity high and low parameters are set, more zones are sampled next to the High Velocity setting, resulting in more zones with smaller Velocity spans and lower Velocity zones that span more Velocity values.
Log1-Log3: Gradually render the Velocity curve more logarithmic. After the Velocity high and low parameters are set, more zones are sampled next to the Low Velocity setting, resulting in more zones with smaller Velocity spans and higher Velocity zones span that more Velocity values.
Auto Loop pop-up menu: Choose one of the following:
None: No auto-looping is performed.
Search: The best preexisting loop in each sample is searched and set, without adding a loop crossfade. This is useful if the sampled sound contains clearly looping sections.
Search with XFade: The best preexisting loop in each sample is searched and set, and a loop crossfade is also added to smooth the loop. This is useful if the sampled sound contains clearly looping sections.
Search with Rev XFade: The best existing loop in each sample is searched and set, and a copy of the loop is first reversed and mixed with the loop itself, and then a loop crossfade is added.
Penrose Machine: Instead of searching for the best loop in each sample, a snapshot of the sample is taken, and the Penrose Machine algorithm is used to create a DSP-synthesized loop from the snapshot, which is inserted and crossfaded with the rest of the sample.
The Penrose Machine is an algorithm in which the sonic properties of the current loop are analyzed, and an artificial loop is created with the same sonic properties. This algorithm is completely automatic and has no parameters, making it simple as well as very powerful.
Bidirectional: The loop area is cut, doubled in length (by being crossfaded into a reversed copy of itself-hence the name “bidirectional”), and the resulting loop is smoothly crossfaded back into the original sample.
Auto Loop Start field and slider: Drag vertically to set the point at which Auto Sampler starts searching for an auto loop point, as a percentage of the total sample length/time (depends on the Sustain value). For example, for a 10-second sample with an Auto Loop Start value of 40%, Auto Sampler begins looking for an auto loop start point after 4 seconds.
Auto Loop End field and slider: Drag vertically to set the auto loop end point as a percentage of the total sample length/time.
One Shot checkbox: When selected, samples are saved as one shots.
When it is triggered, a one shot sample plays back to the end of the file, regardless of whether other samples are triggered. One shots are typically used for percussion sounds and sound effects.
Input Gain slider: Drag horizontally to adjust the input gain. You can play notes on the keyboard display and view the levels in the graphic display to see if any notes are clipping (appear red). If notes clip, reduce the input gain level until no clipping occurs.