Audiofront midi expression Manual de usuario
Quattro
iO
USER MANUAL
Updated 09/12/2019
Table of Contents
Introduction.........................................3
Features......................................................3
Pedal Sensing Technology..........................3
Class Compliant...........................................3
Standalone peration..................................3
Colors..........................................................3
n-Board LED.............................................4
Parameter Feedback...................................4
Value Persistence........................................4
Default Settings...........................................4
Getting Started....................................5
Setting Up Your MIDI Software....................5
Changing Device Settings............................5
Control Application.............................6
Standalone vs. Plugin Mode........................6
Device and Input Selector............................7
Sidebar........................................................7
Input Editor..................................................8
Pedal Type Selector....................................8
Using Expression and Hihat Pedals....9
Controls for Expression and Hihat Pedals....9
Modes for Expression and Hihat Pedals....11
Basic Modes..............................................11
Note and Hihat Modes..............................12
Using Sustain Pedals........................ 4
Controls for Expression and Hihat Pedals..14
Modes for Sustain Pedals..........................15
Basic Modes..............................................15
INC / DEC Modes......................................15
Dual CC Mode...........................................16
Keyboard Modes.......................................16
Using Footswitches........................... 7
Linked Modes for Footswitches..................17
MIDI Routing...................................... 8
USB MIDI Loopback..................................18
Resolution..................................................18
MIDI Transformer.............................. 9
Power Button.............................................19
Specifying Which Messages to Process....19
peration Parameters................................19
Inverting Velocity.......................................19
Assigning Pedals to Transformer
Settings.............................................20
Modes for Switch Pedals...........................20
Modes for Expression Pedals....................21
MIDI Activity Monitor........................22
Snapshot Manager.............................23
AU / VST Control Application............24
Why Would You Want to Use It?..............24
Adding the Plugin To Your Project............24
Activating and Deactivating inputs............24
Using presets............................................25
iOS Control Application.....................26
Getting Connected.....................................26
Camera Connection Kit.............................26
Network MIDI............................................26
MIDI Cables (MIDI Expression i )............27
Updating the Firmware.....................28
(A) Changing Colors..................................28
(B) Class Compliance................................28
Restoring the Control Interface..................29
Wiring Diagrams................................30
MIDI Implementation.........................3
MIDI Expression Manual page 2 / 31
Introduction
If you've purchased a MIDI Expression device, thank you for your support and I hope you enjoy
using it.
This manual gives you a good look at how MIDI Expression devices and the MIDI Expression
Control application work. While they are both easy and intuitive to use, this manual is worth
reading to familiarize yourself with their features and to discover aspects of their use that are not
so obvious.
Features
•Pedal Sensing Technology.
•Polarity reversing inputs.
•Class compliant driverless implementation.
•Standalone operation (MIDI Expression i )
•Powerful preset editor.
•Parameter feedback.
•Value persistence.
Pedal Sensing Technology
All MIDI Expression devices are designed with the ability auto detect the type of pedal plugged into
them. They can detect expression pedals, sustain pedals, hihat controllers, and dual footswitches.
The pedal sensing feature automatically loads an associated preset based on the type of pedal
plugged in.
Polarity reversing inputs ensure compatibility with pedals from all manufactures. Take a look in the
appendix for wiring diagrams for each pedal type.
Class Compliant
MIDI Expression devices will run on virtually any system that supports USB including Windows,
SX, Linux, i S, and Android, without the need to install drivers. For use in the USB host port of
3rd party MIDI devices such as an iConnect interface, a 'pared-down' version of the firmware can
can be used as described here.
Standalone Operation
The MIDI Expression i can operate in Standalone Mode without a connection
to a computer. The device automatically enters this mode when powered by a
USB charger or a Roland / B SS style 9V DC power adapter. In standalone
mode, MIDI from MIDI in port is merged with MIDI generated by pedals and is
routed out the MIDI ut port.
Colors
MIDI Expression devices come in six different colors, each with a unique MIDI port name. This
makes it easy for you and your software to distinguish multiple MIDI Expressions plugged into the
same computer. The 'color' of a device can be changed by updating the firmware installed on
the device.
MIDI Expression Manual page 3 / 31
6 - 12V (200 mA)
On-Board LED
Each MIDI Expression has an internal LED that provides visual feedback when you plug in the
device, plug in a pedal, or select a device with the Control Application. The black and blue devices
have opaque encloses, so the LED is only visible by looking through the jack. For all other colors,
the LED is visible through the enclosures.
The MIDI Expression i (Mk 2) has 3 LEDs visible from the back of the unit. The top LED is a
status LED, the middle LED indicates MIDI DIN in activity and the bottom LED indicated MIDI DIN
out activity.
Parameter Feedbac
MIDI Expression monitors its MIDI IN port and updates its values accordingly, allowing it to stay in
sync with your music software.
Value Persistence
MIDI Expression devices remember their toggle positions and current patch values even after
being unplugged, ensuring that your device is always in the exact state as you last left it in.
Default Settings
MIDI Expression Manual page 4 / 31
Input 1 Input 2 Input 3 Input 4
Expression CC CC CC CC
Chan: 1 CC: 7 Chan: 2 CC: 7 Chan: 3 CC: 7 Chan: 4 CC: 7
Sustain CC CC CC CC
Chan: 1 CC: 64 Chan: 2 CC: 64 Chan: 3 CC: 64 Chan: 4 CC: 64
Hihat CC CC CC CC
Chan: 10 CC: 4 Chan: 10 CC: 4 Chan: 10 CC: 4 Chan: 10 CC: 4
Footswitch CC CC CC CC
Chan: 1 CC: 1 Chan: 2 CC: 1 Chan: 3 CC: 1 Chan: 4 CC: 1
Chan: 1 CC: 2 Chan: 2 CC: 2 Chan: 3 CC: 2 Chan: 4 CC: 2
Getting Started
Because MIDI Expression devices are class compliant, they work 'right out of the box'. Simply
connect your device with a USB cable and you are ready to go.
Setting Up Your MIDI Software
If you want to be able to controlled an application via MIDI, especially in Windows, you will likely
need to enabled the MIDI Expression in the application's audio / MIDI setup. Every application is
slightly different and yet basically idea is the same. Here are a bunch of screenshots showing how
to enable MIDI Expression in various applications.
Connecting Pedals
MIDI Expression devices support expression pedals, sustain pedals, footswitches, and hihat
controllers. For pedals with removable cables, it’s best to plug the cable into the pedal before
connecting to the MIDI Expression. Plugging in a cable without a pedal attached can confuse the
Pedal Sensing and resulting in your pedal being setup incorrrectly.
MIDI Expression devices do not support piezo based kick pedals. These pedals produce high AC
voltages that can damage the MIDI Expression, and the MIDI Expression outputs DC voltage
which can put strain on peizos.
Changing Device Settings
To change settings for you device, download and install the Control Application, which is
available for Windows, mac S, and i S.
MIDI Expression Manual page 5 / 31
REAPER
Control Application
As MIDI Expression devices have no physical buttons, any changes you want to make need to be
done using the MIDI Expression Control application. The window of the application is scalable, so
you can adjust the size to best suit the resolution of your display.
Standalone vs. Plugin Mode
The MIDI Expression Control application comes in two varieties—a standalone version and also a
plugin version. While both varieties work in pretty much the same way, there is one major
difference between them. When you make changes using the standalone version, your changes
are saved directly to the memory in the device itself. However, when you make changes using the
plugin version, the settings are saved in the plugin's own memory and not the device.
When using the plugin version, settings saved in the plugin are uploaded to the device when the
plugin is loaded. When the plugin is unloaded, the settings from the plugin are offloaded and the
settings stored in the device (via the standalone version) are restored. This behavior not only
allows you to have different configurations loaded for each project, but also allows the two versions
of the application to be complementary to each other.
The instructions for the rest of this section are assuming you're using the standalone version. For
the most part they also apply to the plugin version, just remember that the plugin version does
N T save any settings to the device itself and the settings are offloaded once the plugin version is
closed.
Look here detailed information regarding plugin mode.
MIDI Expression Manual page 6 / 31
Device and Input Selector
The topmost part of the MIDI Expression control application is reserved for selecting the device
and input you want to edit.
When using a multi-input MIDI Expression, an input can be selected for editing by clicking on its
graphic in the center of the top header.
If you have more than one MIDI Expression connected, icons for each device become visible
allowing you to select the device you want to edit. The control application supports editing up to
four devices at one time.
Sidebar
The sidebar controls the device settings that you want to edit.
This icon displays the Input editor. You can use it to edit the behavior of your
pedals and the kind of MIDI messages they produce.
The Routing Editor lets you control how MIDI is routed through the device and set
the MIDI resolution of the inputs.
The MIDI Transformer is a MIDI effect that allows you to use pedals to dynamically
manipulate the MIDI messages the device generates.
The Snapshot Manager lets you save entire snapshots of your device’s memory,
allowing you to quickly change the entire configuration of a device with a single click.
When the Autoselect option is on (default), the Input Editor will automatically select an
input for editing when its pedal moves.
nly available on Windows, the n Top option keeps the Control Application on top of
other windows.
This button opens up the MIDI Expression manual. This button in not available on the
i S version of the Control Application.
The firmware for MIDI Expression devices is periodically updated to fix bugs and add
new features. Click this icon to Update Your Firmware.
Note: The single input MIDI Expression and first generation MIDI Expression Quattros only support
a limited version of the MIDI Transformer and so thing icon will be greyed out when editing these
devices.
MIDI Expression Manual page 7 / 31
Input Editor
The Input Editor lets you make changes to the behavior of your pedals and the type of MIDI
messages they produce.
Pedal Type Selector
Each MIDI Expression input has a pedal sensing feature which allows it to automatically detect the
type of pedal plugged in. When the SENSE control is underlined (default), pedal sensing is on
and the pedal type is automatically selected, making the input plug ‘n play.
You can override the pedal sensing by manually selecting one of the four pedal types. When
manually selecting a pedal type, the Sense control is no longer underlined indicating that the Pedal
Sensing feature is turned off.
Note: With Pedal Sensing off, the input will remain configured for the selected pedal type even after
plugging in a different type of pedal or unplugged the device. To restore the pedal sensing feature for
that input, you will need to ensure that SENSE is switched back on.
MIDI Expression Manual page 8 / 31
Using Expression and Hihat Pedals
Controls for Expression and Hihat Pedals
(A) Input Polarity Switch
Expression pedals can be wired in different ways. In order to support pedals from all
manufacturers, the polarity of individual MIDI Expression inputs is reversible.
There are three possible values for this control, “Auto’ (Default), straight, or reversed. Generally
speaking, you should leave set to auto unless your particular pedal is having issues with the ‘Auto’
setting.
(B) Mode Selector
Clicking the Mode Selector allows you to change the behavior of the pedal and the type of MIDI
messages it generates. Look here for more detailed information about modes for expression
pedals and hihat controllers.
(C-D) Channel and Control Change
The values in these boxes can be adjusted in a variety of ways. Firstly, you can drag the values up
or down with your mouse. For more precision, hold down the SHIFT key while you drag. Values
can also be manually entered by double clicking on the box. Lastly, the values can be incremented
and decremented using the up and down arrows.
MIDI Expression Manual page 9 / 31
C
E
D
AB
F G IH
(E) Expression Curve
The Expression Curve control allows you to customize the response curve of your pedal. It allows
you to set the minimum and maximum values, as well as the transition between these values.
When you adjust the min, max, or curve, the background lights up indicating that the Expression
Curve control is on. Clicking anywhere in the background will turn it off again. The MIN and MAX
controls show a range from 0 - 127 by default, but you can change to a percentage (%) value by
right-clicking on them.
(F) Invert
The invert control is pretty straight forward. If you get a value of 127 with the pedal pressed down
and 0 with it up, checking INVERT will give 127 with the pedal up and 0 when pressed down.
(G) Smoothing
This function applies a filter to a pedal's input to prevent abrupt changes in the measured value.
Please note that using smoothing adds a bit of delay which becomes very noticeable at higher
values. If you need extremely fast response, turn smoothing off.
(H) Smoothing Rate Control
This control sets a limit on the number of values that are output per second. For example, if the
control is set at 10 values / second, and you move the pedal from 0 up to 100, the MIDI Expression
will slowly output values from 0 to 100 over a ten second period. The feature can be very useful
for controlling long sweeping motions such as fade outs and fade ins.
(I) Calibrate
If you find your pedal will not output values all the way down to zero or all the way up to 127, then
you may need to calibrate. When calibrating, the calibrate indicator will flash and an indicator
representing your pedal's response range appears. Take the pedal through its full range of a
motion, pressing it all the way up and down a few times. After you are done, click the calibrate
switch again and the settings will be stored in the device.
While calibrating, the calibration can be overridden by dragging either side of the green range
indicator.
Note: Watch out for pedals with adjustment knobs. For best performance, adjust to allow for the
greatest range of values.
MIDI Expression Manual page 10 / 31
Expression Curve used to
add more resolution at the
top of the pedal's travel.
Expression Curve used to
add more resolution at the
bottom of the pedal's travel.
Expression Curve used to
limit the range of values
output by the pedal.
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