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Yamaha D-85 Manual page 27

Electone organ
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This provides a gentle reverberation,
TREMOLO
DEES
If neither
of these tablets is depressed, the tremolo
effect
will
not
be produced.
If they
are
depressed
together, the TREMOLO
tablet takes priority.
What does symphonic chorus mean?
This function, when
added to any upper, lower or
pedal flute, orchestra or bass tone levers, wil! produce
a massed effect. For example, when used with an 8'
string, the sound
produced
will be that of many
strings or violins. When used with flute tone levers, a
cathedral pipe organ is simulated.
UPPER FLUTE:
The
effect applies only to the
flute sounds of the upper key-
board tone levers.
UPPER ORCHESTRA:
The
effect applies
only
to the orchestra sounds of the
upper keyboard tone levers.
The SYMPHONIC
CHORUS
tablets
take
priority
over
the TREMOLO
tablets.
The tremolo effect cannot be applied
to 'wah-brass,' 'vibraphone' and 'wah
guitar' sound,
The effect is produced with COMB-1
and COMB-2,
@
LOWER FLUTE: The
effect applies only to the
flute sounds of the lower key-
board tone levers,
@
LOWER ORCHESTRA:
The
effect applies
only
to the orchestra sounds
of the
lower keyboard tone levers.
@
PEDAL:
The effect applies to all the sounds of
the pedal keyboard tone levers.
When the CELESTE
tablet is set to ON, the sound
reverberates slowly and this gives the music a settled
and 'picturesque' effect.
What does tremolo mean?
Tremolo
is a variation
in volume
as opposed
to
vibrato (which is a variation in pitch). This effect is
achieved
by placing a rotating drum
in front of a
stationary
speaker.
As
the
drum
rotates
fast
(TREMOLO) or slow (CHORUS) the sound is only
permitted to escape from an opening on one side of
the drum, which results in a change in the volume
heard by the ear.
To produce the desired effect, simply select the voice
or voices
that are desired, for example
the upper
flutes to rotary, then select the mode of tremolo,
either fast (TREMOLO) or slow (CHORUS).
Generally, the fast speed is used for popular music
and the slow for church or classical selections.
(If the TREMOLO and CHORUS tablet are depressed
together, the TREMOLO tablet takes precedence.)
TREMOLO SPEED control
This can vary the speed
only when the tremolo
effect is being used.
3 Channel Speakers
Tremolo speaker
Once the TREMOLO tablet has been set to ON, the
speed of the tremolo effect can be adjusted using the
TREMOLO
SPEED control. (This adjusts the speed
of the rotary drum.)
€ The chorus speed is fixed.

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