Roland DM-80R User Manual Page 9

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®ÂØÒňΠDJ-70/DJ-70MKII Supplemental Notes
© 1997 Roland Corporation U.S. DJ-70/DJ-70MKII Basics Page 9 of 13
Setting Loop Points
Looping is a common sampling technique used to conserve memory. For example, a 16 bar drum
Sample would probably use a large majority of your available Sample time. If you were to take a 4 bar
Sample and loop it 4 times you would still have 16 bars of drums but you would use 75% less memory.
The key to looping is finding the right loop points so that there is not an audible ‘glitch’ when the Sample
reaches the end and starts to play from the beginning again. Use the following procedure to set loop
oints:
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1) Press JUMP MENU so it is lit.
2) Press F2 to access the Loop and Smoothing display.
3) Use the CURSOR buttons to highlight “Sample” and press S1.
4) Use the CURSOR buttons to highlight the desired Sample and press S1.
5) Use the CURSOR buttons to highlight “Key On Mode” and the VALUE dial to select “Loop.”
6) Use the CURSOR buttons to highlight “Loop Mode” and the VALUE dial to select “Forward.”
7) Press GRAPHIC so it is lit. A graphic representation of your Sample will now be displayed.
8) Press F3 and use the VALUE dial to adjust the loop start point as desired. The hollow marker above
the waveform will provide a visual indication of the loop start point. If you hold down a key while you
are adjusting the loop start point you can hear the adjustments in real-time.
9) Press F2 and use the VALUE dial to adjust the loop end point as desired.
NOTE: You can control how quickly the VALUE dial scrolls through your Sample by pressing F5 (the
X parameter). As you press the F5 button, the display will indicate the current resolution of the
VALUE dial (1-10,000). A larger resolution number will allow you to scroll through the Sample faster
than a smaller resolution.
A great way to edit your loops is to load a Sample in the loop mode and press the GRAPHIC button,
then play the sound on the keyboard while pressing the HOLD button. Now you can hear the loop play
continuously. Use the F2 and F3 buttons to select the loop start or end points and use the VALUE dial to
adjust the loop as desired.
TIP
Time Stretching
A valuable feature on the DJ-70/DJ-70MKII is the Time Stretching function. The most common use for
Time Stretching is changing beatloops to a new tempo without affecting the original pitch. Load the “Loop
1” Patch from the DJ-70/DJ-70MKII Demo disk and use the following example as guide for Time Stretching
our own beatloops:
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1) Press INDEX.
2) Use the DOWN CURSOR button to highlight “Sample” and press S1.
3) Use the DOWN CURSOR button to highlight “Time Stretch” and press S1.
4) Use the CURSOR buttons to highlight “Sample” and press S1.
5) Use the CURSOR buttons to highlight the Sample you wish to time stretch and press S1.
6) Use the DOWN CURSOR button to highlight “Mode” and the VALUE dial to select “Auto.”
7) Play a key above or below the original key (pitch) that matches the desired tempo. For this example
we will use F4 as the original key and G4 (2 half steps higher) as the desired tempo.
8) Use the CURSOR buttons to highlight “Ratio” and turn the VALUE dial counterclockwise. The Ratio
Percentage will start to decrease from 100% and the Coarse tuning (in the box on the right side of the
display) will reflect the amount of change in half steps. Stop turning the dial when the Coarse tuning
parameter is set to “-2” and Fine tuning is set to “0.” This will decrease the amount of time in the
Sample, which will result in a faster tempo (positive numbers will result in slower tempos).
9) Use
the DOWN CURSOR button to highlight “Execute” and press S1 to time stretch the Sample.
NOTE: The results of the Time Stretch function can vary greatly depending on the material being
affected. If you are unhappy with the results of the time stretch, you can return your Sample to its
original tempo by using the CURSOR buttons to highlight “Recover” and pressing S1.
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