Akai S900

16
PAGE
1Q1KEYGRQUP
VELOCITY
RESPONSE
-*\£
VLCTY
*Loudness
3
tHtatk
50
*KGI
SENS.
*Filt«r
50
*Rt!iin
+00
Three different
paramenters
can
be
altered
by the note-on
velocity: loudness,
filter
frequency,
and attack time.
Release
time can be altered
by a note's release
(note-off)
velocity.
LOUDNESS
Point arrow
at
"Loudness."
Use CONTROL
or enter
a two-digit
number (00—99)
with the
0-9
keys.
With
00
loudness,
the
loudness remains
constant
regardless of
keyboard
velocity. Increasing
this number
(up to
99)
increases
the effect that
velocity
has
on loudness,
with more velocity
giving
a
louder
sound. Thus,
the harder
you play, the
louder the
keygroup
sound.
FILTER
Point
arrow
at "Filter."
Use CONTROL
or enter
a two-digit
number
(00—99) with the
0—9
keys.
With
a setting
of
00,
the
filter
cutoff
frequency
remains constant
regardless of
keyboard velocity.
Increasing
this number
(up
to
99)
increases
the effect that
velocity
has
on filter cutoff, with
more velocity giving
a higher
filter cutoff
frequency. Thus,
the
harder
you
play, the
brighter
the sound.
This
effect is
characteristic
of many
acoustic instruments.
ATTACK
Point
arrow at "Attack."
Use CONTROL
or enter
a
two-digit
number (00—99)
with the
0—9
keys.
With
a setting of
00,
the
attack remains
constant
regardless of
keyboard
velocity, increasing
the number
(up to 99) increases
the
effect that velocity
has
on attack time,
with more
velocity
giving
shorter attack
times. Thus,
playing
forcefully
creates
more
percussive sounds than
playing
lightly.
RELEASE
Point arrow
at "Release."
Use
CONTROL or
use the
+,
—
, and
0—9
keys to
enter a two-digit
from
—50
to +50.
With
a setting of
00, the release
remains
constant
regardless of
the
release velocity.
With higher
numbers
(up to
+50), releasing
the
keys
quickly gives
a
longer
release
time than
releasing
the
keys slowly. With
lower numbers
(down
to —50),
releasing the
keys quickly gives
a
shorter
release time
than
releasing the
keys
slowly.
PAGE 1
1
WARP
(automatic pitch
bend)
*il]l
WARP tViltcit)
Time
99
• KGI
*Attuk
offset
+00
Warp adds
a
pitch-shift
to a note's
attack
so
that
the
note starts
slightly
sharp
or
flat
before gliding
down or
up respectively
to
the
normal
pitch.
1
.
Point arrow
at
"Velocity."
Use CONTROL
to set warp interac-
tion
with velocity
as
follows:
0:
Velocity
does not affect warp, which
is
constant.
1
-1
28:
Higher
numbers give more
warp with
greater velocity.
The
amount of warp is hardly
noticeable
at 1 even with
very
hard
playing;
at
1
28,
playing
hard gives strong
warps.
2. Point arrow
at
"Time."
Use CONTROL
to
set the
amount of
time over
which the
warp
occurs (0
=
short, 1 28
=
long).
3. Point
arrow
at
"Attack
offset." Use CONTROL, or the
+,
-,
and
0—9
keys, to
set total
amount of pitch
warp and direction.
Examples:
+00
gives no
pitch
warp.
—25
gives a
slight warp
from
fiat
to
normal
pitch,
—50
gives a
strong warp
from flat to
normal
pitch, and
+
50
gives a
strong
warp
sharp
to
normal
pitch.
Note: An
upward
pitch warp is
characteristic of wind instruments
(sax etc.); a
downward
pitch warp
is
characteristic of plucked
instruments
(bass,
drums,
etc.).
PAGE
121
LFO (low frequency
oscillator
for
modulation)
—
T2
LFO.
*
Depth
(Rita lOil
«
*D«sync
•KGI
64
64
ON
The
S900's
LFO adds
vibrato
effects and has four parameters:
DEPTH (of
modulation)
Point arrow at
"Depth."
Use
CONTROL or the
0—9
keys to select
a two-digit
number (up
to 99).
Larger numbers make the vibrato
effect more
noticeable.
RATE (of
modulation)
Point arrow
at "Rate."
Use
CONTROL or the
0—9
keys
to select
a
two-digit
number
(up
to 99).
Larger
numbers
increase the vi-
brato speed.
DELAY
(th©
time
over which
modulaton fades In)
Point arrow at
"Delay." Use
CONTROL
or the
0—9
keys
to select
a
two-digit number (up
to 99).
Larger
numbers
increase the
amount of time
over
which
the modulation fades in.
DESYNC (LFOs)
Each
S900
voice has its
own LFO.
These may
be synchronized
so that all notes
vibrato
together,
or desynchronized
so that vi-
brato occurs
individually for
individual notes. Desync
LFO ef-
fects are useful
when
creating complex sounds,
such
as string
sections.
Point arrow at
"Desync."
Press ON/+ to
sync LFOs,
OFF/— to
desync.
PAGE 131 LFO
DEPTH (via aftertouch or
modulation
wheel)
—
13 UFO DEPTH
Mf
tirtoueh
*Mod. >hnl
*KG I
SO
LFO depth is often
not
set for a
fixed
amount
(as described
in
Page 1
2)
but selectively
introduced
under
control of
the
player.
One method is to
use a
modulation
wheel, where
turning
the
wheel
adds
modulation.
Another is to
use a
keyboard
with
after-
touch, where pressing
on keys once
they
are down introduces
modulation.
Note: Any
modulation
added
on this page
is in addition
to the
modulation depth
specified
on PAGE
1 2.
AFTERTOUCH
(LFO
depth
control)
Point arrow at
"Aftertouch."
Use
the CONTROL or
the 0-9
keys
to enter a two-digit
number.
The
higher
the
number,
the
greater
the modulation depth
when
aftertouch
is activated.
MOD
WHEEL (LFO
depth
control)
Point arrow at
"Mod.
wheel." Use
the
CONTROL
or the
0-9
keys to enter
a
two-digit
number.
The higher the
number,
the
greater
the modulation
depth
when the
modulation
wheel
is
turned to its maximum
travel.