Yamaha CS-15 Owner's Manual page 19

depends
upon
the
lip
vibration of the player, so that
the
sound
is
small
in
volume and
soft in
tone
at
the
outset.
As
soon
as lip
vibration
starts,
volume and
tone reach
a
peak and
settle
then
to a stable level
EG
and
Filter
Let us consider the difference
between peak and
stable
level.
In the case
of the trumpet,
this
difference
presumably
is
not
so
big.
So we
decrease the
SUS-
TAIN
level
only
by
that
amount.
When
the
SUSTAIN
level
has
been determined,
begin applying
EG
on
the
VCE.
Raise the
EG
DEPTH
knob
of
VCF
1.
When
the
keys
are depressed,
clicks are
heard
at
the
beginning
and
the tones
change
while the
keys are
kept
depressed.
Now
readjust the
CUT OFF FREQ
knob under
the
assumption that the
continued depressing
of the
keys
represents
the
trumpet being continuously
blown.
Set
DECAY
TIME
to a
proper
value
with D.
(As
there
is
only
a slight
difference
between
the
peak
level
and
the
SUSTAIN
level,
only
a
small effect
is
necessary.)
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Determine
the
ATTACK
TIME
with
A
while
de-
pressing the keys.
This
is
very delicate
and must be
done
with
care.
A
slight sliding will
be
sufficient.
Now,
as
the
EG DEPTH
has
been
raised to 10, the
tone change
at
the
envelope peak seems to be too
big.
Therefore
turn the
EG DEPTH
down
to
about
the
center position.
Thus you
will
find that the
tone
change
in
the
moment
of attack
approximates
that
of
the
trumpet. But
this results in a
change
in
tone
at
the
SUSTAIN
level.
Adjust
this
again with the
CUT
OFF FREQ
knob. This
means
that the
depth of
EG
being applied to
VCA
and
rate
of the
depth
applied
to
VCF
have
been
controlled
by the
EG DEPTH
of
the
VCF.
Raise the
RELEASE TIME
only
slightly
so that
the sounds
do not
fade
away
suddenly
at
the end.
This completes the
trumpet sound
creation. If
slight
RESONANCE
is
added,
it
makes
the tones
clearer.
Has
the final setting
been
made
as illustrated
below?
Try
to create the
sounds
you
desire
little
by
little
by
repeating operations such
as
described above
many
times
in
various ways.
Then
try to
produce sounds
other than those of
the
trumpet. If
you
continue
to
generate various sounds,
you
will
come
to
under-
stand the functions of
the synthesizer.
Final
Setting
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