Yamaha CS-15 Owner's Manual page 13
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Also See for CS-15:
- Owner's manual (28 pages) ,
- Owner's manual (27 pages) ,
- Service manual (34 pages)
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FUNCTIONS
EG
The
EG
blocks
create
an envelope
curve
in
the
four
modes of
generation
of
sounds
A
(A
TTACK),
D
(DECA
Y),
S
(SUSTAIN)
and
R
(RELEASE)
and
submit
the
sound
to
temporal
change.
The
EGs
(envelope generator) function
on
the
VCF
and
VCA
blocks
and
produce
the
envelope
curves
to
lend
temporal change
to
the
tone
produced
in
the
VCF
blocks
and
the
volume.
EGs
start in
the
VCA
blocks.
The
EGs
are controlled
by
trigger signals
from
the
keyboard, corresponding
to
the
KEY-ON,
KEY-OFF
timing,
or
by
external
signals.
®
EXT/KB
D
This switch
selects
whether
the
envelopes
of
EG
1
are triggered
by
the
ON/OFF
of
the
keyboard
or
by
external
signals.
For normal keyboard performance
it
is
turned
to
the
KBD
position;
to
trigger
the
envelopes with
external
signals
it
is
turned
to
the
EXT
position.
®m
A
(ATTACK
TIME)
Adjust
the
time
from
the
moment
when
keys
are
depressed
until
maximum
change.
It
controls the
attack
characteristics at
the
beginning
of sound
pro-
duction. Sliding the control
towards
L
causes slower
attack.
@®
D
(DECAY
TIME)
Adjust
the
decay
time
from
the
maximum
change
until
the
stable
condition
set
with
the
SUSTAIN
LEVEL
controls
@
(5J)
is
reached. Sliding
towards
L
causes slower decay.
®dD
S
(SUSTAIN LEVEL)
Adjusts
the
stable
sound
level
that
will
sustain
until
keys
are
released
after
changes
by
ATTACK
and
DECAY
TIME
have been completed.
Sliding
towards
10 causes
the
SUSTAIN
LEVEL
to
become
higher.
@®
R
(RELEASE
TIME)
Adjust
the time
from
the release
of keys
until
the
sound completely
fades
away.
Sliding
towards
L
causes the time to
become
longer.
@©
NORMAL/TIME
X
5
If
the
switch
is
set
to the
TIME X
5
position, the
time
set
with A, D, and
R
controls
will
become
approximately
five
times
longer.
©@
@ ©
@>©
Envelope
curve
Four
states
of
the envelope.
SUSTAIN LEVEL
ATTACK
TIME
Trigger
Signal
DECAY
TIME
RELEASE
TIME
KEY
ON
KfY
Of !
When EG
applied
to
VCF
LPF-
\(T)
\
The
cutoff
frequency
is
\
-
\
changed by
EG
to
give
i
^>
V
^
.
tone changes
in
time.
\
\
fc
1
fcs
f03
The
wave form
also
changes.
©
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