Alesis S4 Plus Bedienungsanleitung PDF herunterladen (Seite 47)

Chapter 6: Editing Programs

46 S4 Plus Reference Manual

interface maintains the metaphor of “modules,” in fact all sounds are simply a set of

numbers reflecting how you’ve programmed the various sound parameters. For

example, when you change the filter cutoff frequency, you’re not actually messing

with a filter; you’re telling the computer to simulate the effect of messing with a filter.

Each "module" is represented by parameters that appear on one or more display

pages. The Quad Knobs and Buttons change these parameters. All "patching" is

done via software, so the only patch cords you need are those that go to your mixer

or amplifier.

You can take a "snapshot" of the S4 Plus’s parameters and save this in memory as a

program.

The S4 Plus comes with 512 factory preset programs, and 128 user-

editable programs.

Program Sound Layers

The simplest method of programming is to take one voice, process it through the filter

and amp sections, and (if desired) add some effect to it. However, more elaborate

Programs usually consist of 2 to 4 layers, with each layer making its own distinct

contribution to the sound, for example:

• An organ program with Program Sound 1 set to a sustained organ waveform, and

Program Sound 2 set to a percussion waveform with a fast decay.

• A piano program with one layer tuned normally, and a second layer tuned an

octave higher.

• A synthesizer program with one layer set to a sharp attack waveform, a second

layer set to an acoustic waveform, and a third layer with a slow-attack string

waveform.

This may remind you of Mix Play Mode, where playing the keyboard can sound up to

16 different Programs at once. There are many similarities. In Mix Play Mode, you

can make the same kind of layered Mix as you can with the four sounds of a

Program. But there are differences:

Use Program Layers:

• If you want multiple sounds to respond to a single MIDI channel. For example, if

you need to play a layered synthesizer sound that was assembled in Mix Play

Mode instead of Program Play Mode, you must send 3 Note On messages from

your sequencer (one for each channel) for every note; a layered program would

need only one Note On message.

• When layers of a Program are designed to be used together, and the individual

layers by themselves wouldn't be used alone (for example, the percussion layer

of the organ sound).

Use Mix Play Mode:

• When you want to layer more than four voices. In Mix Play Mode, it is possible

(though not advisable) to stack all 64 voices onto a single key.

• When each sound is likely to be used by itself by other setups. For example, if

you are programming three different keyboard splits, each of which uses the

same left-hand bass patch, it makes sense to use Mix Play Mode.

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