Sampling: Loop Edit - Korg PA1X User Manual

218 Sampling operating mode

Sampling: Loop Edit

When editing audio grooves, the Loop Start should match the
Sample Start point. This parameter usually differs from the Sam-
ple Start in ordinary sounds (i.e., a guitar, a piano, a voice...).
Loop Start (L)
Length
Sample Start (S)
End (Sample/Loop End)
This is the sample and loop end point (in samples). You may edit
this point, to shorten the sample.
Warning: When saving the edited sample (Write Sample opera-
tion), the segments exceeding the Start and End points are perma-
nently removed.
Snap to Zero
Turn this parameter on, to make all Sample and Loop Start and
End selections fall on zero-crossing points (i.e., points where the
waveform crosses the x-axis, and goes from negative to positive,
or from positive to negative values). This will make loops more
accurate, and will reduce the risk of "clicks".
OrigNote (Original Note)
Original pitch of the sampled note. While this parameter means
nothing in this page, it will be useful when assigning a sample to
the multisample, to identify the original pitch of the sample.
For example, if you sample a C4, set this parameter to "C4".
When the sample will be assigned to a keyboard zone of the mul-
tisample, it will be transposed (if needed) according to this
parameter, to avoid a change of the original pitch.
Zoom
Use these buttons to change the size of the waveform shown in
the diagram. When a button is greyed-out, it means the maxi-
mum or minimum value has been reached.
Increase the vertical size.
Decrease the vertical size.
Increase the horizontal size.
Decrease the horizontal size.
Full zoom in.
Full zoom out.
Changing the sample length and finding
good-sounding loop points
To adjust the sample length and loop points, check the "Loop
On" parameter, then use the "Start", "Loop Start" and "End"
parameters to create a fine sounding cycling loop.
Loop End (E)
Loop
Sample End (E)
For example, you may have sampled an audio groove of an
exceeding length. Use the "End" parameter to cut the exceeding
portion at the end of the sample, and adjust the starting point of
the loop using the "Start" or "Loop Start" parameters.
Usually, checking the "Snap to Zero" parameter is a big help, to
avoid the loop clicks due to level mismatches.
Sampling: Loop Edit
The loop is a cycling portion of a sampled sound, that may
match with the whole sample. After the attack stage, most
sounds repeat the same waveform during their sustain stage. You
may adjust the Loop Start point with the "Loop Start" parame-
ter, and the Loop End point (always matching the Sample End
point) using the "End" parameter.
This page lets you fine tune the loop points, by watching at the
Loop End and Loop Start points matching at the center of the
diagram. A good-sounding loop is shown as a continuous, non-
breaking line.
SM (Sample)
Selected sample. See "SM (Sample)" on page 216.
Loop diagram
This diagram shows the "End" (Loop End) point on the left half,
and the "Loop Start" point on the right half of the screen. Use
the "End" and "Loop Start" parameters to adjust the loop.
Parameters
Start
See "Start (Sample Start)" on page 217.
Loop Start
See "Loop Start" on page 217.
End
See "End (Sample/Loop End)" on page 218.
Use Zero
See "Snap to Zero" on page 218.
Loop Lock
This fixes the length of the loop being edited.