The Harmonizer
Programmer’s Manual
The Harmonizer
Programmer’s Manual Page 13 of 97 Release 1.2.1
1999 Eventide, Inc.
• they can change the number of audio, mod, and control inputs and outputs, or even the number of
other specifiers (!) for a module.
• they can be numerical, multiple choice, or text.
The Modules Section in this manual lists all of the module types and their associated specifiers.
A
UDIO INPUTS
An audio input is used to pass high fidelity audio into a module. An audio input can be connected to at
most one audio or mod output. Unconnected audio inputs are actually attached to a special “null signal”
provided by the Harmonizer's operating system. The null signal simulates a zero voltage, noise-free audio
source. Audio signals range if value from -1 to +1, or full negative to full positive. Audio inputs are always
found on the left side of modules.
A
UDIO OUTPUTS
An audio output is used to pass high fidelity audio out of a module. An audio output may be connected to
any number of audio or mod inputs. Audio outputs are always found on the right side of modules.
C
ONTROL INPUTS
One module can control the parameter of a second module by connecting to the second module’s control
input
(as we saw the knob modules doing in the “Custom Interface” section). The range of values a control input can accept may
be set by a specifier, by fixed internal programming, or even by another control input. A few notes concerning
control inputs:
• Control inputs are always found on the left side of a module.
• The value of a control input cannot change the amount of resources used by a module.
• The existence of a control input takes up processing and memory resources. In modules with a variable
number of control inputs (like the c_switch module), reducing the number of inputs reduces the amount
of resources used. (In such modules, specifiers control the number of control inputs.)
• Control inputs can be connected to only one control output.
CONTROL OUTPUTS
A control output sends a numerical value to another module by connecting to one of the other module’s
control inputs. A single control output can connect to any number of control inputs. Control outputs are
always found on the right side of a module.
M
OD INPUTS
A mod input is used to pass a high performance modulation signal into a module. A mod input may be
connected to at most one audio or mod output. Unconnected mod inputs are actually attached to a special
“null signal” provided by the Harmonizer's operating system. The null signal simulates a zero voltage,
noise-free audio source. Mod signals range if value from -1 to +1, or full negative to full positive. Mod
inputs are always found on the left side of a module.
Although mod signals are high performance modulation signals, they kind of stink at passing audio signals
(they were never really meant to! Remember, they act to achieve cornerstone two - to control the parameters of modules). An audio signal passed
through a mod in/mod out on a module will lose fidelity. This is because the sampling rate used for mod
signals is 1/4 that used for audio signals.
(Of course if you go for that retro, “aliasing." dawn-of-the-samplers kind of sound, mod
signals might be right up your alley!)
