Korg TRITON Extreme Manual page 212

0–6M: Time Stretch (Sustaining)
Time Stretch is a function that modifies the tempo by length-
ening or shortening the length of the data without affecting
the pitch. This lets you change the tempo of a pitched sam-
ple (e.g., a vocal, or a string or wind instrument) to match
the tempo of other data or the song. You can also execute
this command on a stereo sample.
This provides the same functionality as the Sampling mode
Sampling P1: Sample Edit page menu command "Time
Stretch (Sustaining)" for a WAVE file.
1 In the Media, Utility (or similar) page, select the Wave
file that you want to edit, and then enter the Edit WAVE
page.
2 Set "Edit Range Start" and "Edit Range End" to specify
the region of data on which you want to execute Time
Stretch.
3 Select "Time Stretch" to access the dialog box.
4 Use "Quality" to specify the audio quality of the data
produced by the Time Stretch command. You can set this
in a range of 0–7. Although it depends on the data, higher
settings will usually produce a better result. However,
you should be aware that higher settings will also require
a longer processing time.
You can repeat this operation as many times as you like,
so start with a lower setting, and gradually adjust the set-
ting as needed.
5 Specify the length of the data that will be produced by
the Time Stretch operation.
• If you want to specify the length as a ratio
Specify a "Ratio" in the range of 50.00%–200.00%.
With a setting of 50.00% the sample length will be
halved (the tempo will be doubled). With a setting of
200.00%, the sample length will be doubled (the
tempo will be halved.
• If you want to fit the data into a specific BPM (tempo)
Specify the desired "Beat" (the number of quarter
notes per minute). If you change "Beat," the "Source
BPM" value will change automatically. (☞p.131)
You cannot make settings that would cause "Source
BPM" or "New BPM" to exceed a range of 40–480.
You cannot make settings that would cause "Ratio" to
exceed a range of 50.00–200.00.
Depending on how the data is processed the resulting
length may not be exactly as you specified.
6 To execute the Time Stretch command, press the OK but-
ton.
The Time Stretch dialog box will appear.
7 Verify the resulting data created by Time Stretch.
Index
Selecting Source will display the original waveform
prior to Time Stretch. Selecting Result will display the
waveform after Time Stretch.
Waveform display: Displays the waveform of the WAVE
file selected by "Index."
If the Wave file is stereo, the L channel data is displayed
above, and the R channel data below.
ZOOM: Use these buttons to zoom-in or zoom-out the
vertical or horizontal axis of the waveform. (☞Sampling
P1: 1–1C)
Start:
End:
These fields specify the start address and end address of
the currently selected index.
When you execute Time Stretch, these addresses will be
set automatically. However in some cases, the margin of
processing error may cause the playback to be slightly
shifted. If this occurs, you can re-specify the address
here.
To hear the sound of the specified region, press the
SAMPLING [START/STOP] key. The region specified
by "Start" and "End" will play back when you press the
SAMPLING [START/STOP] key.
8 If you press the Stretch button, the Time Stretch dialog
box will appear, and you can re-do the time stretch once
again. Execute Time Stretch as described in step 4 and
5 .
9 Save the time stretched data. Press the Save button to
display the Save dialog box.
0 For details on "Overwrite. WAV" and "Name," refer to
"0–6A: Save WAVE Parameter" steps 2 and 3 .
A To save, press the OK button. If you decide not to save,
press the Cancel button.
By repeating steps 8 – A you can create more samples as
desired.
B Press the Exit button to exit the Time Stretch operation.
[Source, Result]:
201