8 - Preset Edit

LFO/Auxiliary Envelope

LFO/Auxiliary Envelope

•Delay: Sets the amount of time between playing a key and the onset of modulation. This can be used to simulate an effect often used by acoustic instrument players, where the vibrato is brought in only after the initial note pitch has been established. The delay range is adjustable from 0 seconds to 20 seconds.

•Shape: Sets the LFO waveshape which determines the effect of the LFO. There are 16 LFO waveforms and a random, sample & hold type of wave which outputs random levels at the LFO rate.

The LFO waveforms are diagrammed on the following page.

•Variation: Sets the amount of random variation on an LFO each time a key is pressed. This function is useful for ensemble effects, where each note played has a slightly different modulation rate. The higher the number, the greater the note to note variation in the LFOs.

•Sync: Key Sync or Free Running. With key sync selected the LFO wave starts at the beginning of its cycle at each key depression. In free run mode, the LFO wave begins at a random point in its cycle on each key depression.

v To Program an LFO:

1.From the Dynamic Processing level of the Preset Editor, select the voice(s) you wish to process using the voice selection screen, then press the LFO/Aux function key (F4).

2.Use the Previous and Next Page buttons to locate the LFO 1 or LFO 2 screen.

3.Adjust the LFO parameters as desired.

4.Press the Exit button to return to the Preset Definition level of the Preset Editor or press any of the dynamic processing function keys to move to another module.

348 E-MU Systems

8 - Preset Edit

Lag Processors

LFO Waveshapes

Random	Triangle	Sawtooth
Sine	Square	33% Pulse
25% Pulse	16% Pulse	12% Pulse
Pat: Octaves	Pat: Fifth+Octave	Pat: Sus4 trip
+ Octave	C	G
	G	F
C		C
- Octave
Pat: Neener	Sine 1,2	Sine 1,3,5
C
A#
G
Sine + Noise	Hemi-quaver

Lag Processors

The LFO 2 screen contains controls for the two lag processors used in the modulation Cords screens. Lag processors can be inserted in a modulation patch to inhibit rapid changes in the modulation source or cause it to lag behind the input. The amount (rate) of lag is adjustable from 0 to 10. A setting of O will cause the least amount of lag. 10 is the slowest lag. The diagram on the following page shows one way that a lag processor might be used.

EOS 4.0 Software Manual 349

8 - Preset Edit

Auxiliary Envelope

v To Program the Lag Processors:

1.From the Dynamic Processing level of the Preset Editor, select the voice(s) you wish to modify using the voice selection screen, then press the LFO/Aux function key (F4).

2.Use the Previous and Next Page buttons to locate the LFO 2 screen.

3.Use the cursor buttons to select the Lag Processors.

4.Adjust the Lag Time of processor 1 or 2.

5.Insert the Lag Processor between a modulation source and destination in the Cords screen.

6.Press the Exit button to return to the Preset Definition level of the Preset Editor or press any of the dynamic processing function keys to move to another module.

Foot

Switch

Cord

Switch

Instantly On

Lag

Processor

Lag Slows

Rapid Change

of Footswitch

LFO

Cord

LFO Gradually

Speeds Up

Auxiliary Envelope

The auxiliary envelope is a general purpose envelope generator that can be patched to any modulation destination.

v To Set the Auxiliary Envelope:

1.From the Dynamic Processing level of the Preset Editor, select the voice(s) you wish to modify using the voice selection screen, then press the LFO/Aux function key (F4).

2.Use the Previous and Next Page buttons to locate the Aux Envelope screen.

3.Select and adjust the Auxiliary Envelope parameters. Use the cursor buttons to move the cursor around to the various parameters and the Data Entry Control or INC/DEC buttons to change the time and level of each stage.

4.Like the filter envelope generator, the auxiliary envelope allows you to set negative levels. This can be very useful to create attack “blips” when controlling the pitch of a voice.

5.Press the Exit button to return to the Preset Definition level of the Preset Editor or press any of the dynamic processing function keys to move to another module.

350 E-MU Systems