Korg NAUTILUS Series, Руководство по параметрам, Страница: 635 / 961

SAMPLING: Page Menu Commands Time Stretch
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Time Slices requires vacant samples, multisamples, and
relative parameters in order to execute. Be sure that there
is sufficient free area before you execute. If there is
insufficient free area, an error will occur.
Note: If you open the Time Slice dialog box on the same
sample, it will be sliced in the same way as previously.
These slice locations will also be used if you execute
Slice in the
Time Stretch menu command, so that you
don’t have to make the settings again.
If you wish to detect the attacks again or to re-do the
operation, change the
Sensitivity after you open the
dialog box.
Time Stretch
Time Stretch lengthens or shortens a sample without
changing its pitch. This is convenient when you wish to
change the tempo of a rhythm loop (drums) or a melodic
sample (e.g., vocal, strings, winds) to match the tempo of
another sample or of the sequencer. The NAUTILUS
provides two ways in which Time Stretch can be executed.
This command also supports stereo samples.
Sustaining
This type is suitable for sustained sounds such as vocal or
instruments. Using it to change the tempo of phrases such as
guitar or piano will also produce good results.
Slice
This type is suitable for decay-type instruments such as
drums. Using it to change the tempo of drum or percussion
loops will produce good results with minimal effect on the
attack.
Note: It is possible to change the pitch when you adjust the
tempo of a rhythm loop or similar sample, using the Detune
BPM Adjust menu command. You can create interesting
effects by raising or lowering the pitch of a drum sound. For
more information, see “Detune BPM Adjust” on page 437.
Using Time Stretch (Sustaining)
1. Select the sample that you wish to time-stretch using
the Sustaining method.
2. Select the Time Stretch command to access this dialog
box, where you can select the desired time stretch
method.
3. Use the radio buttons to select Sustaining. Then press
the OK button to execute, or the Cancel button to
cancel without executing.
If the L and R of a stereo sample are different
in length, blank data will automatically be added to the
end of the shorter sample so that it matches the longer
side.
4. The Time Stretch dialog box will appear.
5. Set Quality to specify the desired audio quality of the
sample produced by Time Stretch.
The range is 0–7. Higher settings will generally produce
better results (depending on the sample being processed),
but will also increase the processing time.
Since you can try this as many times as you like, you
should normally start with about 4, and raise or lower the
setting gradually.
6. Set the proportional length of the sample that will be
created by Time Stretch.
• To specify the length as a ratio:
Set the Ratio to the desired value. The available range is
50.00%–200.00%.
50.00% reduces the sample to half of its original length,
doubling the tempo.
200.00% increases the sample to double its original
length, slowing the tempo to half-speed.
The tempo of the resulting sample will be calculated
automatically based on the
Ratio and Source BPM , and
displayed in New BPM .
• To match an existing BPM tempo value:
Set Beat as the number of quarter-note beats. When you
change Beat , the Source BPM value will be changed
automatically.
Source BPM will indicate the playback BPM value at the
original key. This BPM value is automatically calculated
according to the length from the start address to the end
address (if loop is off) or from the loop start address to
the end address (if loop is on). If you already know the
BPM value and the calculated value is incorrect, change
it to the correct value.
Use
New BPM to specify the BPM value of the sample
you wish to create. Ratio will automatically be calculated
from the Source BPM and New BPM values.
For example if you have a one-measure 120 BPM sample
in 4/4 time, and would like to change it to 150 BPM, you