Rhodes CHROMA - Basic Building Blocks

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STRUCTURE
Right Control Panel
Audio
Basic Building Blocks
Each channel in the synthesizer consists of the
following sections:
Oscillator
The pitch of the oscillator can be tuned {rom
one octave below concert pitch (two with the trans-
pose switches) ta over four octaves above (aver
five with transpose). Each oscillator has three modu-
lation inputs.
Waveshapg
The waveshape can be selected ta be eüher a
pulse or a shape called "saws" which is a combina-
tion of a pulse and a sawtooth, simulating the sound
of tWQ sawteeth. The pulse width (and the saws
shape) can be adjusted from 0% ta almast 100% and
can be modulated.
Filter
The filter can be set up as a law-pass or high-pass
filter. Its rcsonance is adjustable from 0 up ta
self-oscillate. The tuning of the fil ter can be adjusted
over the entite audio spectrum, and there are three
modulation inputs.
Amplifier
The volume of the channel is controlled by an
amplifier with linear control. The amplifier has two
inputs for enve[opes, which are fully adjustable, and
has a third input for selecting special modulations,
such as tremalo or perlaI control.
Qllik
The pitch information generated by the keybaard
passes thraugh the glide processar, which is capable
of slawing dawn the transitions From pitch ta pitch,
either in a smaoth portamento or a chroma tic
glissando. A wide range
of rates are selectable. In
addition, certain keyboard algorithms automatîcally
enable and disable the glide accarding ta how the
notes are played.
Control
The sweep generatar generates low.frequency
repetitive control signaIs. It has a basic rate that
can be adjusted over a wide range. Its rate can be
modulated by one of 15 other control signais. It
has 16 waveshapes available, including sine, triangle,
saw, square and randam. Its amplitude can be madu-
lated by one of 15 ather control signais, includino;; its
awn internai delay envelope generator. And lastly,
it can be synchranized ta key-depresslOns, and .lil
sweeps can be locked tagether as one.
The envelapes generate AR (attack, release)
shapcs or AnR (attack, decay, release) shapes. :Vlore
complex shapes are created by combining envelapes.
The Attack, Decay and Release times are variable from
instantaneous to very long and can be moduiated by
one of 7 control signais. The release time can be
made to respond to the rate the ke)" is released. And
the peak value can be made ta respond ta the force
of attack in 7 different ways.
This envelope
is just like envelope 1, except that
an adjustable delay is provided. AIso, a special setting
allo~ the envelope to be triggered off the sweep.
Performance Cantrols
There .tre six control signaIs available that come
from various performance contrais.
The two levers by the keyboard generate bipolar
control signaIs. The two pedaIs on the !loor generate
unipolar control signais. The key strike velocitv is
available as a control signal, and key pressure is ;1\ail·
able as a hardware option. The lever and pedal
signais
differ from an other contrai signaIs in that
they are common ta aIl channels.
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