Akai MFC42 Operator's Manual download pdf (Page 19)

Chapter 3 Advanced Operations

[ADSR]

The ADSR stands for the Attack

time, Decay time, Sustain level and

Release time of the envelope. In the

example of keyboard instrument,

the Attack time is the time between

the key press and the time it takes

to reach the maximum sound level.

The Decay time is the time it takes

to reach reach to the sustain level

from the maximum level. The

Sustain level is the level while the

key is held pressed. The Release time is the time between the key is released and the sound diminished.

As in the above example, the envelope is often used change the sound level in time span. In the MFC42,

the ADSR envelope is applied to the cut-off/resonance to change the sound character in time span.

Note: When the envelope is triggered by the Groove Modulator, described later, the envelope becomes as

the waveform shown at “Adjusting the trigger timing of envelope” on the previous page since the sustain

time (the time the key is held) is not programmable. Similarly, in the Manual Trigger operation, the sustain

time is the time the TRIGGER key being held.

Groove Modulator

What is the Groove Modulator?

In order to control the cut-off and/or resonance and change the sound character cyclically, it requires the

setting of “speed”, “way” and “amount” of change. The section that does all these is called the Groove

Modulator and consists of the BEAT module, LFO/ENVELOPE module and DEPTH module.

BEAT module (speed of change)

This is the module that sets the speed of LFO and the trigger timing of envelope. It consists of MIDI CLOCK

SYNC, TAP TEMPO and RATE modules. One of them is selected to control the speed and timing.

LFO/ENVELOPE (way of change)

This module sets the way the cut-off/resonance is changed. The sound is changed according to the shape

of LFO/Envelope specified (either one of LFO or Envelope is selectable, but not both).

DEPTH (amount of change)

This module sets the magnitude of LFO waveform or the depth of envelope. The magnitude of waveform

or the depth corresponds to the amount of change.

Changes

Note ON

Attack time

(A)

Decay time

(D)

Sustain level

(S)

Note OFF

Release time

(R)

Time

GROOVE MODULATOR

BEAT MODULE

CUTOFF

RESONANCE

MIDI/TAP/RATE

LFO/ENVELOPE

DEPTH

(Speed of change)

(Way of change)

(Amount of change)

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 32 33

Comments to this Manuals

No comments

Akai MFC42 Operator's Manual Page 19

Comments to this Manuals

Related products and manuals for DJ controllers Akai MFC42