Technical data
EXERCISE
11:
ARTICULATION—CONTOURING
LOUDNESS
j
1.
Play
the keyboard.
Notice
that
the
attack
and
release
of
the
sound
are
practically
immediate.
The
ATTACK
and
RELEASE
controls
are
set
for
quick
(1
msec
=
one-thousandth
of
a
second)
attack
and
release
times.
2.
Play
again.
The
sound
will
sustain
as
long
as
you
hold
a
key.
Notice
that
the
LOUDNESS
SUSTAIN
switch
is
in
the
"sustain"
mode
to
the
left.
Look
at
the
graphics
for
the
LOUDNESS
SUSTAIN
switch—it
depicts
what
you
are
hearing.
The
LOUDNESS
CONTOUR
section
and
LOUDNESS
SUSTAIN
switch
settings
shown
typify-.an
organ-like
loudness contour.
The
keying
is
on-off,
and
sound
is
sustained
as
long
as
a
key
is
held.
Let's
retain
the
sustain
feature,
but
play
with
the
attack
and
release
of
the
sound:
3.
Gradually
increase
the
ATTACK
control
setting
while
playing
the
keyboard.
The
rise
time,
or
attack
of
the
sound
increases.
Notice
that,
the
longer
the
ATTACK
setting,
the
longer
you
must
hold
a
key
before
the
sound
reaches
maximum
loudness.
4.
Return
the
ATTACK
control
to
its
original
(1
msec)
setting.
5.
Gradually
increase
the
RELEASE
control
setting
while
playing
the
keyboard.
The
fall
time
on
release
of
all
keys
increases;
final
release
of
the
sound
occurs
more
slowly
when
all
keys
are
released.
6.
Return
the
RELEASE
control
to
its
original
(1
msec)
setting.
The
setting
of
the
ATTACK
control
determines
the
time
it
takes
the
LOUDNESS
CONTOUR*section
to
open
the
VCA
in
iJe
the
Multimoog
to
maximum
gain
(loudness).
The
setting
of
the
RELEASE
control
determines
the
time
it
takes
the
LOUDNESS
CONTOUR
section
to
close
the
VCA,
or allow
the
sound
to
fall
to
silence.
Now
let's
explore
the
function
of
the
LOUDNESS
SUSTAIN
switch:
7.
Play
the
keyboard.
Sound
will
be
sustained
as
long
as a
key
is
held.
8.
Place
the
LOUDNESS
SUSTAIN
switch
to
the
"non-sustain"
position
to
the
right.
Play
the
keyboard;
only
a
short
click
will
be
heard.
Continue.
9.
Increase
either
or
both
the
ATTACK
and
RELEASE
control
settings
slightly.
Play.
The
sound
will
not
be
sustained,
but
will
last
only
as
long
as
the
combined
times
of
the
ATTACK
and
RELEASE
control
settings.
Experiment
with
them.
The
non-sustain
position
of
the
LOUDNESS
SUSTAIN
switch
lets
you
produce
very
short
sounds,
or
sounds
that
would
not
normally
sustain
forever,
such
as
the
harpsichord,
guitar,
bell,
etc.
So
far
we've
learned
that
the
ATTACK
control
sets
the
timing
of
the
beginning
of
a
sound,
the
LOUDNESS
SUSTAIN
switch
selects
a
maximum
or
zero
sustain
level
in
loudness,
and
the
RELEASE
control
times
the
release,
or
end
of
a
sound.
Now
let's
see
how
the
RELEASE
switch
works:
10.
Set
ATTACK
to
1
(msec);
RELEASE
to
700;
LOUDNESS
SUSTAIN
switch
to
left.
11.
Depress
any
key;
hold,
then
release
and
listen.
Notice
that
the
release
is
not
immediate,
but
is
determined
by
the
RELEASE
control
setting.
12.
Place
the
RELEASE
switch
to
the
right.
Now
notice
what
happens
when
you
release
all
keys.
The
release
is
short
regardless
of
RELEASE
control
setting.
13.
Try
different
RELEASE
control
settings.
With
each
new
setting
try
each
position
of
the
RELEASE
switch.
When
the
RELEASE
switch
is
to
the
right,
the
release
of
any
sound
will
be
abrupt
on
release
of
all
keys
regardless
of
the
RELEASE
control
setting
in
the
LOUDNESS
CONTOUR
seaion.
At
first
impression,
it
may
seem
that
we
are
right
back
where
we
began,
with
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