Yamaha SY99 Owner's Manual page 175

VOICE EDIT MODE
press a key, set R4 to 0. However some AWM
waveforms naturally decay to zero, so setting
R4 to 0 will not make these waveforms sustain.
Rates and Levels: The AWM EG will function in
two ways depending on the Mode setting.
In normal mode the AWM EG level will begin
from 0 and rise at the rate of Rl to maximum
level. When maximum level is reached it will
move at the rate of R2 to level L2. When level
L2 is reached it will move at the rate of R3 to
level L3. When level L3 is reached it will begin
moving at the rate of R4 to 0. (If rate R4 is 0, the
sound will move at an infinitely slow rate toward
zero; i.e., it will sustain at level L3 as long as
the key is pressed.)
When you release the key, the level will
move at the rate of RR to a level of 0.
In hold mode the AWM EG level will begin at
maximum and stay there for the duration of the
specified hold time HT. When the hold time has
elapsed, the level will change at the rate of R2 to
level L2. The rest of the EG is the same as for
normal mode.
Using the AWM EG in hold mode is espe-
cially effective when you are using an AWM
waveform which includes a definite attack.
Keeping the level at maximum for a while allows
the natural attack of the AWM sample to be
heard. After the natural sampled attack is over
the AWM waveform will continue sustaining,
164
and you can use the remaining AWM EG
parameters to create an appropriate decay and
release.
Rate 4 and Release Rate: Rate 4 (R4) and
Release Rate (RR) can be used in conjunction to
create a variety of AWM EG shapes.
If R4 is greater than 0 and you continue holding a
note, after the level reaches L3 it will decrease
at the rate R4 and will move to 0 even though
you continue holding the note.
If R4=0 and you continue holding a note, after
the level reaches L3 it will stay at L3 as long as
you hold the note. When you release the note,
the level will decrease at the rate of RR to a
level of 0.
• After reaching L3 the level will decrease at the
rate R4, but when you release the note the level
will begin decreasing at the rate RR.