Akai S1000 Series Operator's Manual download pdf (Page 71)

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Version 2.0 89/11

Sampler functions

The depth of the pitch modulation LFO can be affected by three real-time performance

parameters: the modulation wheel

("modwheel"), the aftertouch ("pressure") applied

to the keyboard, and the speed

("velocity") with which. the key is hit. All these

parameters can take values from 00 to 99 - the higher the number, the greater the depth

of the pitch modulation LFO when these performance parameters increase.

The amount of pitchbend (in semitones) that can be effected using the pitch bend wheel

is set by the

"bendwheel" parameter. If set to 0 (minimum), no pitchbend will take

place when the wheel is moved. The maximum value is 12 (one octave) up or down

from the center position when the pitch bend wheel is moved appropriately.

Aftertouch

("pressure") can also be used to affect the pitch of the program. This

parameter is variable from +12 to -12 (semitones). When set to positive values, the pitch

will increase as aftertouch is applied (to a maximum of +12 semitones - one octave). If

this is a negative value, the pitch will decrease as aftertouch is applied (to a maximum of

-12 semitones - one octave).

The

"tuning" parameter allows final adjustment of the program's pitch by t50

semitones in semitone/cent steps.

Finally, the "

LFO desync" parameter when ON, sets all the pitch modulation LFOs for

different notes to a slightly different frequency. This mimics the effect of (say) a string

ensemble, where each player produces vibrato at a slightly different rate from the other

players. When OFF, each LFO will be set to the same frequency.

Conclusion

As you can see, setting up programs on the S1000 is not radically different from setting

up patches on a multi-timbral synthesizer. The same principles of envelope shape, filter

and LFOs apply to both. The main difference is that you start with sampled waveforms,

rather than generated or prerecorded PCM waveforms, giving you an almost infinite

flexibility in the sounds you can create.

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Akai S1000 Series Operator's Manual Page 71