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RE4: Amplitude Decay Track

Displayed as:

AmpDecTk

Initial value:

Range of adjustment:

-64 to +63

This parameter works in exactly the same way as

Attack Track

, except that it is the Decay

time of a note that becomes dependent on its position on the keyboard.

RE5: Amplitude Sustain Rate

Displayed as:

AmpSusRt

Initial value:

Flat

Range of adjustment:

-64 to Flat to +63

With this parameter set to Flat, the volume during the Sustain phase of the envelope re-
mains constant. Additional variations to a note’s character can be obtained by causing the
note to become louder or quieter while the key is held. A positive value of

Sustain Rate

will cause the volume to increase during the Sustain phase, and it will continue to do so
until maximum level is reached. The parameter controls the rate at which the note increases
volume, and the higher the value, the faster the rate of increase. Any Release time set will
act as normal when the key is released, whether or not the maximum volume has been
reached. If a negative value is set, the volume during the Sustain phase drops, and if the
key is not released, the note will eventually become inaudible.

Lower values (positive or negative) of Amplitude Sustain Rate are generally
more useful.

RE6: Amplitude Sustain Time

Displayed as:

AmpSusTm

Initial value:

127

Range of adjustment:

0 to 126, KeyOff

This parameter sets the duration of the Sustain phase. With a value of KeyOff, the note will
remain audible continuously until the key is released (unless a negative value of

Sustain

Rate

has been applied to reduce its volume). Any other value of

Sustain Time

will cut

the note off automatically after a pre-determined time if the key is still held down.

Release

Time

still applies if the key is released sooner. A value of 126 sets the Sustain time to ap-

prox. 10 seconds, while values around 60 set it to about 1 second.

RE7: Amplitude Level Track

Displayed as:

AmpLvlTk

Initial value:

Range of adjustment:

-64 to +63

This parameter works in a similar way to the other “tracking” parameters

Attack Track

and

Decay Track

(

RE3

RE4

), but it is the volume of the note which is changed, according to

the interval between it and the

Track Note

set by

RE8

. With a positive value, notes higher

than the Track Note get progressively louder the further from the Track Note they are, and
vice-versa. With a negative value, notes higher than the Track Note get progressively qui-
eter the further from the Track Note they are, and again, vice-versa. Note that this volume
modiication is applied to all phases of the amplitude envelope equally; it is the overall
volume of the note which changes with

Level Track

. The effect should be used sparingly;

low values have a better effect.

Note that although Amplitude Level Track appears to operate in a very similar
manner to Amplitude Attack Track and Amplitude Decay Track, only Level Track
uses a user-deinable note as the reference (

set by RE8

), above which notes

get louder and below which get softer. The Attack and Decay Track parameters (

RE3

and

RE4

) have a ixed reference note at C 3.

Common Envelope Parameter

This parameter is available on Page 2 of the menu for every Envelope.

RE8: Level Track Reference Note

Displayed as:

LvlTkNte

Initial value:

C 3

Range of adjustment:

C -2 to G 8

This sets the reference note used for

Amplitude Level Track

. When active, this parameter

increases the volume for notes above the chosen Track Note, and reduces it for notes
below it. C 3, the default value, is Middle C on the keyboard; this is the C one octave above
the lowest note on the keyboard (also C), providing no

OCTAVE

buttons [32] are selected.

Envelope 2 (Filter) parameters (Page 1)

The parameters available for adjustment with Envelope generator 2 closely match those for
Envelope generator 1. Whereas Envelope 1 is concerned with modiications to the sound’s
amplitude envelope, Envelope 2 gives you “dynamic” iltering, by establishing a relationship
between the ilter section and ADSR Filter Envelope 2, resulting in the ilter frequency be-
ing varied by the shape of the envelope.

In order to hear the effect of any of the Filter Envelope parameters, you will irst
need to go to the Filter Menus and set up some iltering. Then set

RE5

on Filter

Menu Page 1 (

F1Env2

F2Env2

) to an initial value of approx. +30 and ensure

that the ilter is not fully open – i.e., set

F1Freq

to mid-range.

RE1: Filter Attack Time

Displayed as:

FltAtt

Initial value:

Range of adjustment:

0 to 127

This parameter sets how the ilter section acts during the note’s Attack phase. The higher
the value, the longer it takes for the ilter to react during this phase.

To evaluate the action of the Filter Envelope parameters for each of the ADSR
phases (

RE1

RE4

), it may be helpful not to set all three to zero.

RE2: Filter Decay Time

Displayed as:

FltDec

Initial value:

Range of adjustment:

0 to 127

This parameter sets how the ilter section acts during the note’s Decay phase. Again, the
higher the parameter value, the longer the period for which iltering is applied .

RE3: Filter Sustain Level

Displayed as:

FltSus

Initial value:

Range of adjustment:

0 to 127

The frequency of the ilter (cut-off or centre, depending on ilter type) “settles” at a value
set by the

Filter Sustain Level

. Thus, once the Attack and Decay stages of the envelope

are completed, the harmonic content that will be most evident in the sound will be deter-
mined by this parameter. Remember that if the ilter frequency parameter (as set in the Filter
Menu) is set at a too low or too high a value, the envelope’s effect will be limited.

RE4: Filter Release Time

Displayed as:

FltRel

Initial value:

Range of adjustment:

0 to 127

Filter Release

is increased in value, the note undergoes increasingly more ilter action

once the key is released.

Note that the

Amplitude Release

time (in Envelope 1’s parameters) must be set