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Yamaha GEP50 Manual

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47. Pitch A This program can actually change the pitch of an input signal over a ±1-octave range. The shifted pitch can be combined with the direct sound (by an appropriate setting of the BALANCE parameter) to create automatic harmonies. Pitch Shift (PITCH): -12 - +12 Sets the degree of pitch change in semitone steps. +12 cor- responds to an output pitch one octave higher than the input 1 10 pitch, and -12 produces an output pitch one octave lower +8 than the input pitch. An external MIDI keyboard can even be used to select the desired degree of pitch shift. + 3 Fine Tuning (FINE): -100 - +100 Permits extremely fine pitch adjustment in one-cent steps. Delay Time (DELAY): 0.1 - 400 milliseconds Sets the delay between the direct sound (input signal) and the pitch-shifted output signal. Feedback Gain (F.B. GAIN): 0 - 99% When this parameter is set to 0, only a single pitch-shifted sound is produced after the DELAY time has elapsed. As the - II value of this parameter is increased, however, more and more delayed repeats are produced, each pitch-shifted up or down from the previous repeat according to the setting of the PITCH parameter. Base Key (BASE KEY): OFF, C1 - C6 This parameter sets the "BASE KEY" for an external MIDI synthesizer used to control the PITCH parameter (the MIDI OUT terminal of the synthesizer must be connected to the GEP50 MIDI IN terminal, and the GEP50 must be set to receive on the MIDI channel on which the synthesizer is transmitting). If, for example, the BASE KEY parameter is set to C4, pressing the C3 key on the synthesizer (C3 is one octave lower than C4) will set the pitch change value to -12. Pressing D4 on the keyboard would produce a pitch increase of one whole-tone (+2). If a key more than an octave higher or lower than the BASE KEY is pressed, the resultant pitch change setting will still be within the -12 to +12 range, as shown in the illustration below. If the BASE KEY parameter is set OFF, pitch cannot be controlled via the MIDI IN terminal. F 5 E 5 D 5 C 5 B 4 A 4 G 4 F 4 E 4 D 4 C 4 B 3 A 3 G 3 F 3 E 3 D 3 C 3 PITCH 5 4 2 + 2 0 5 - ID 12 A 2 + 1 + 12 range is repeated Pitch can be changed over a ± 12 range with the BASE KEY in the center. - 1 - 12 range is repeated 23 GEP50 GUITAR EFFECT PROCESSOR

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47.
Pitch
A
This
program
can
actually
change
the
pitch
of
an
input
signal
over
a
±1
-octave
range.
The
shifted
pitch
can
be
combined
with
the
direct
sound
(by
an
appropriate
setting
of
the
BAL-
ANCE
parameter)
to
create
automatic
harmonies.
Pitch
Shift
(PITCH):
-12
-
+12
Sets
the
degree
of
pitch
change
in
semitone
steps.
+12
cor-
responds
to
an
output
pitch
one
octave
higher
than
the
input
pitch,
and
-12
produces
an
output
pitch
one
octave
lower
than
the
input
pitch.
An
external
MIDI
keyboard
can
even
be
used
to
select
the
desired
degree
of
pitch
shift.
Fine
Tuning
(FINE):
-100
-
+100
Permits
extremely
fine
pitch
adjustment
in
one
-cent steps.
Delay
Time
(DELAY):
0.1
—
400
milliseconds
Sets
the
delay
between
the
direct
sound
(input
signal)
and
the
pitch
-shifted
output
signal.
Feedback
Gain
(F.B.
GAIN):
0
—
99%
When
this
parameter
is
set
to
0,
only
a
single
pitch
-shifted
sound
is
produced
after
the
DELAY
time
has
elapsed.
As
the
value
of
this
parameter
is
increased,
however,
more
and
more
delayed
repeats
are
produced,
each
pitch
-shifted
up
or
down
from
the
previous
repeat
according
to
the
setting
of
the
PITCH
parameter.
Base
Key
(BASE
KEY):
OFF,
C1
-
C6
This
parameter
sets
the
"BASE
KEY"
for
an
external
MIDI
synthesizer
used
to
control
the
PITCH
parameter
(the
MIDI
OUT
terminal
of
the
synthesizer
must
be
connected
to
the
GEP50
MIDI
IN
terminal,
and
the
GEP50
must
be
set
to
receive
on
the
MIDI
channel
on
which
the
synthesizer
is
transmitting).
If,
for
example,
the
BASE
KEY
parameter
is
set
to
C4,
pressing
the
C3
key
on
the
synthesizer
(C3
is
one
octave
lower
than
C4)
will
set
the
pitch
change
value
to
-12.
Pressing
D4
on
the
keyboard
would
produce
a
pitch
increase
of
one
whole
-tone
(+2).
If
a
key
more
than
an
octave
higher
or
lower
than
the
BASE
KEY
is
pressed,
the
resultant
pitch
change
setting
will
still
be
within
the
-12
to
+12
range,
as
shown
in
the
illustration
below.
If
the
BASE
KEY
parameter
is
set
OFF,
pitch
cannot
be
controlled
via
the
MIDI
IN
terminal.
1
10
+8
+
3
-
I
I
F
5
E
5
D
5
C
5
B
4
A
4
G
4
F
4
E
4
D
4
C
4
B
3
A
3
G
3
F
3
E
3
D
3
C
3
A
2
PITCH
5
4
2
+
2
0
5
-
ID
12
+
1
+
12
range
is
repeated
Pitch
can
be
changed
over
a
±
12
range
with
the
BASE
KEY
in
the
center.
—
1
—
12
range
is
repeated
23
GEP50
GUITAR
EFFECT
PROCESSOR