Yamaha SPX90 II - Manual (Page 14)

STEREO PHASING PITCH CHANGE
The SPX90II can produce a wide range of Phasing
effects from a barely perceptible shift to a rapid pul­
sation. Phasing lends an animated quality to musical
instrument and vocal recordings:
(TIME)
This program is used to change the pitch of an input
signal. Pitch can be changed in semitone increments
over a plus/minus one-octave range. Fine adjustment
of pitch in one-cent (1/100th of a semitone)
increments/decrements is also possible. Pitch change
programs B and C permit setting two different pitches.
This makes it possible to produce a detune type effect
(i.e. when you play a note, the SPX90II outputs two
additional notes), or, if only a slight pitch difference
is used, chorus-type effects are created. Pitch change
programs A and D permit the application of feedback
so that an echo that changes in pitch with each repeat
can be produced. Programs A and D further permit
pitch control via the MIDI IN connector. Any MIDI
synthesizer, such as the Yamaha DX7, can be used to
alter the pitch setting of the program by simply playing
the appropriate note on the synthesizer keyboard.
This effect has the same parameters as STEREO
FLANGE, except that the DELAY TIME range is from
0.1 to 8.0 msec and that it omits F.B. Gain.
TREMOLO
The TREMOLO effect operates in the same way as the
CHORUS effect, except that modulation is deeper and
the delay variation is greater. Refer to STEREO
FLANGE for the description of the parameters.
-SYMPHONIC
The programmable parameters for this preset are
identical to those for the Stereo Flange preset, omitting
F.B. GAIN and MOD DELAY TIME.
PROGRAM PITCH CHANGE FEEDBACK
MIDI PITCH
CONTROL
PITCH CHANGE A 1 TONE YES YES
PITCH CHANGE B
2 TONES
(CENTER)
NO NO
PITCH CHANGE C '
2 TONES
(1 EACH IN
L & R CH.)
NO NO
PITCH CHANGE D 1 TONE YES YES
1. PITCH. Range: -12 ~ +12
Sets the degree of pitch change in semitone steps.
+ 12 corresponds to an output pitch one octave
higher than the input pitch, and -12 produces an
output pitch one octave lower than the input pitch.
2. FINE. Range; -100 ~ +100
Adjusts pitch in one-cent increments or decrements.
3. DELAY Range: 0.1 ~ 1800.0 msec (A, B, D),
0.1 ~ 900.0 msec (C)
Sets the delay between the direct (input signal)
and the pitch-changed output signal.
4. F.B.GAIN. Range: 0 ~ 99% (A,D only)
The higher this setting, the more echo repeats are
produced (each changed in pitch from the previous
repteat).
5. BASE KEY. Range: OFF, Cl ~ C6 (A. D only)
This parameter sets the "BASE KEY" for an external
MIDI synthesizer used to control the pitch variation
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