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Midi, Tutorial 3: midi – ART Pro Audio Quadra/Fx - Two Channel Effects Processor User Manual

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procedure to edit as many parameters as you want. When you are done, you can save the preset by pressing

Store, selecting a preset number to overwrite, and pressing Store again to confirm.

After you’ve edited one engine’s parameters, you may wish to edit another engine’s. Simply press the Engine

button, turn the encoder to select a different one, and press the Encoder (three times) until you are back in

the Parameter edit area. You could also select an engine and just press the Parameter button. The front-

panel buttons are an easy way to jump around a preset. However, if you ever change the routing or effect,

you still have to register the changes by either pressing the Encoder or the next button to the right. For

example, after selecting a different effect, you will not enter the change until you either press the Encoder or

the Class button. If you press the Parameter button instead, you will abort the effect change.

As you can see, the Encoder can be used to move you further down the hierarchy of a preset (from left to

right on the front panel). If you wish to jump backwards (or jump forwards), use the front-panel buttons.

Pressing the Encoder, however, cannot access MIDI parameters, but that process is explained in the next

tutorial.

TUTORIAL 3: MIDI

The Quadra/FX has three types of programmable MIDI parameters: channel, program change, and

continuous controller mappings.

Channel Number:

The MIDI channel number is the channel on which the Quadra/FX will receive and transmit all MIDI data. The

Quadra/FX’s MIDI channel is global to the whole unit, regardless of which preset, routing, engine, or effect it

is set from. Its new value is automatically saved when changed.

MIDI Map:

Each preset contains a MIDI map value that determines which MIDI program change number will recall the

preset. Normally, a received MIDI program change value of 1 would recall Quadra/FX preset #1, a program

change value of 2 would recall Quadra/FX preset #2, and so on. MIDI mapping allows you to change this

ordering. Each preset contains only one MIDI map value, but it can be set and updated from within any

engine. Changes to a preset’s MIDI map need to be saved with the preset.

Controllers 1–4:

The Quadra/FX’s continuous controller mappings are extremely flexible and add a great deal of power to the

unit. Each engine (or engine group) can have up to four MIDI controllers assigned to change parameter

values. Discrete 4 routing, which has four separate engines, can have up to 16 MIDI controller mappings per

preset! Controller mappings can, for example, make a synthesizer’s modulation wheel change reverb time, a

footswitch bypass an effect, or even allow keyboard notes to spin up the rotary effect. Changes to a preset’s

controller mappings need to be saved with the preset.