Rhodes CHROMA - PROGRAMMING; INTRODUCTION TO PARAMETERS

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PRO GRA MMING
PROGRAM
(SOUND DESCRIPTION)
PANEL CONTROL
PARAMETERS
PARAMETERS
(TRANSPOSE,
~-
~~~~~
LI NK,
ETC.)
INTRODUCTION
Parameters
The Chroma 's memory con tains fifty stored
programs (and one current program), each of which
is a complete description of a sound. Each program
is made up of a set of parameters, each of which
contrais one aspect of the sound, just like a slider,
knob or switch on an ardinary synthesizer. In the
Chroma, every parame ter has bath a name and a
number. The name describes the parameter for the
user, and the number identifies it for the Chroma's
computer. Each parameter a1so has another nurnher
associated with it: its value. This is like the setting
of a m'ltch or position of a slider. Different
parameters have different numbers of possible
settings, depending upon what they do. Parameters
have as few as two settings, such as the low-passl
high-pass selection on the filter, while others have
as many as 128 settings for accurate resolution of
critical adjustments of the sound. Each program
contains 101 separate parameters, which are divided
into four groups, called panel, control. A and B.
A CHANNEL B CHAN NE L
PARAMETERS
PARAMETERS
• Panel Parameters do not directly participa te in
the description of a sound. Racher, the panel para·
meters renect the settings of certain modes on the
control panel. These parameters are included in each
program 50 that the settings will he automatically
initialized each time a program i5 selected.
• Control Parameters are part uf lhe description of
a sound. l'hey indude those parameters that pertain
tu the t:ntlrt: sound, not just one of a pair ()f channel~.
• "A" Parameters describe the sound produced by
a single channel. If the program utilizes one channel
per note, the control parameters and A parameters
will completely de5crihe the sound. If the program
utilizes the channels in pairs, the control parameters
affect both channels and the.\ parameters affect only
the A channels.
• "B" Parameters are used only when the program
utilizes channels in pairs. The set of B parameter5 is
identical ta the set of A parameters, and contrais
the B channel in each pair.
Whether the program USl" single l'hannels or
paired channels is determined 'JY one of the cuntrol
parameters, called PATCH [1). If the pro~ram i~ set
up ta use individual channels. the B parameters still
exist in the program, but they have no effen on
the sound generation.
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