Yamaha CS-80 Instruction Manual page 31

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(
Timpani
Two
voices are
used
at
once
for
this
patch (and
the
next
one), so
program
panels
]
and
II.
Panel
i
is
for
the
initial
"mallet" sound.
Instead of the
waveform
used
in
bells
above, turn
off
square
and sawtooth, and
use
only
Noise
[26]
.
The
Ring
Modulator
[16]
should
also
be
turned
off.
HPF
and
LPF
[26
&
28]
are set
to
give
a
narrower
bandpass,
and
AL
[3]
is
lowered
to
avoid
letting
the
sound
get
too
thin.
The
VCF
and
VGA
Release
time [34
&
40]
are longer,
and
VGA
Sustain
level
[39]
is
lowered
to simulate the
die
away
of the
mallet
sound.
Panel
II
is
used
for
the
"drum"
sound.
Sine
wave
[36]
,
sawtooth
[24]
and
a
square
wave
[23] are
used
together,
and
the
square
wave
is
set at
75%
pulse
width
[22]
with
moderate
pulse
width
modulation
[21
]
at
a
slow speed
[20]
;
the
several
waveforms
give
a
richer
sound, with
the
sine
wave
emphasizing
the
fundamental.
Set Feet
il
[5]
at
16'
(the
Noise
in
Panel
I
is
not
affected
by
the Feet
setting).
The
filter
cutoffs
are
the
same
as
Panel
I,
but
resonance
is
added and
the
VCF
envelope
is
changed.
The
entire
VGA
envelope
is
different, since
the
head
resonates long
after
the mallet
is
gone.
The
addition
of
sub
oscillator
VGA
modulation
[11] to the pulse
width
modulation on
Panel
II
emulates
the reverberant
sound
of
the
drum
body.
This 2-voice
effect
could be
simulated with
just
one
channel.
27
-
11
o o
far
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Pizzicato
&
Legato
This patch simulates the
effect of
one instrument
playing quickly
(pizzicato) using
fast
attack
and
decay
times,
and
of
a
second instrument
playing slowly
(legato)
using
slower attack
and decay
times.
The
CH?B"B
PIZZICATO
patches can be seen
clearly
on
the diagram.
Observe
that Panel
II
uses sine
wave
[36]
and
VGA
exclusively.
Notice
when
you
play that
quick key
strokes
give a
"plucked" sound, and
holding keys
down
longer allows
a
second,
completely
different voice to develop.
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