7. FILTER EG — SYNTH

ATTACK[0...127]

Here you can make settings for the filter EG, which applies time-variant change to the tone (Figure 7-1). Make these settings to specify the "shape" of the EG, and use the FILTER parameter "FILTER EG INT" to specify the amount of effect that the EG will have (p.24). By making FILTER EG settings, you can make the tone change as time passes. Create the desired tonal curve by adjusting the ADSR parameters; ATTACK (knob 1), DECAY (knob 2), SUSTAIN (knob 3), RELEASE (knob 4).

For details on how an EG (Envelope Generator) works, refer to AMP EG (p.28).

You can use the FILTER EG as a Virtual Patch source modulate a parameter other than the filter cutoff frequency. (p.30)

DECAY

[0...127] SUSTAIN

[0...127] RELEASE

[0...127] EG RESET

[OFF, ON]

Specifies the time from note-on (when the key is pressed) until the attack level (maximum value of the envelope) is reached.

Specifies the time from when the at- tack level is reached until the sus- tain level (SUSTAIN) is reached.

Specifies the cutoff frequency that will be maintained after the decay time has elapsed, until you release the key.

Specifies the time from note-off (when the key is released) until the level reaches 0.

Specifies whether or not the EG will be reset for the second and subse- quent note-on. If a new note is played before the previous note has finished its release stage, the enve- lope can either start over from zero, or continue from the current value.

OFF ():

The note will start from the current EG level.

ON ():

The second note-on will start from a level of 0.

Note on

Note off

Note on (Retrigger)

Figure 7-1

Cutoff

Attack Level

0

Note on

[3]

Note off

Time

Filter EG and Amplifier EG

When the Filter EG changes the cutoff frequency, the tone will change. However depending on the volume changes produced by the Amplifier EG, this can be heard in different ways. For example by changing the speed at which the tone and volume begin (attack) or decay, you can significantly vary the character of the tonal change. It is a good idea to adjust the changes of both the Filter EG (tone) and the Amplifier EG (volume) as you proceed with editing.

OFF

ON

The "EG RESET" parameter is only available if "VOICE AS- SIGN" is set to Poly, or if "VOICE

[1]

[2]

[4]

[1]: Attack Time

[3]: Sustain Level

[2]: Decay Time

[4]: Release Time

ASSIGN" is set to Mono or Uni- son and "TRIGGER" is set to Multi.

26

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Korg MICRO manual ATTACK0...127, Decay, Sustain Release EG Reset, Second note-on will start from a level