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Roland SP-808 Manual page 25

Groove sampler
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I bounce that track to the sample and voila! I know it's a ton of work to get three not polyphony,
but I've gotten some nice results. Especially when Cakewalk has your effects recorded and it plays
the notes with the same effects.
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Regarding the "Vari-Pitch percentage offset": if you want it to be 90% of the original speed, sample
with vari pitch at 111%. You'll have to use the 32 kHz mode for this but I'm willing to bet you wont
hear any degradation for the vast majority of applications. Honest, chances are your ears can only
hear up to 15.5 kHz if you're over 10 years old. A 32 kHz sample rate has resolution up to 16 kHz.
furthermore, since the Hz/octave relationship is logarithmic, you're only losing a few semitones
when you switch from 20 kHz to 16 kHz anyway. In addition, you needn't worry about time
quantisation either, as any granular synthesist will tell you the temporal threshold for human
hearing is effectively .5 ms. If you go with my argument for 32 kHz, you can "Vari-Pitch" up to
137.8.
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Just hit the TRIM button in the greyish area above the dial. Here you'll see START and END points
and other stuff (use arrow keys to scroll down). First, go to START and hit the SCRUB button
(bottom right of display area). This gives you a visual look at the sample, and also an audible
'frame' of any sound at the moment. Use the dial to scroll into the indentifying 'thump' of the bass
drum. Once you think you're succesful, hit EXIT to return to the TRIM display and go down to END
POINT. If you're any good with guessing timing/BPM you can just roll those numbers in till the BPM
at upper right shows the proper BPM aprox. From here you can go back into SCRUB to 'fine tune' if
you wish (find a 'quiet' gap) or scroll back up to START POINT and hold the pad to hear how
accurate you are. Once you 'push and pull' points to get the loop to be seamless, you may find the
BPM will say 132.39 or something wonky - and you really want to put it with that 130 BPM Drum
loop you got on a CD. Press EXIT and hit SAMPLE/PLAY button at the top middle of the unit. Here
you'll see options, scroll down till you see TIME STRETCH. Enter into this, indentify the bass loop
pad as the source, and adjust time to become 130 BPM (Sometimes it's best to say 129.9 or .8 to
make it come out right), hit ENTER and the correct timed loop will go to the next pad over. Now
snag that drum loop, and follow the same procedures as above (you shouldn't have to worry about
time stretch if it's accurate?) and voila!
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the EX OS differs from the info in the manual in certain places, so wait to upgrade till you know
your way around. You won't figure out a lot of the trickier stuff (like bouncing and FX location)
without the manual. Once you know how to record to a pad from line in, record to a track from line
in, bounce-record each to the other, and apply realtime FX to both in send/return, master insert,
and record insert mode - you've got all the basics down.
Don't worry about the MIDI section of the manual beyond using and external keyboard
to trigger the VA synth, MIDI implementation on the SP-808 is none-too outstanding beyond a
certain practicality for live performance.
Greater Vari-Pitch
Seamless Looping
EX OPSYS

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