MIDI Expression User Manual

iO

Quattro

Updated 02/10/2017

Table of Contents

Introduction.............................................4

Features......................................................4

Pedal Sensing Technology..........................4

Supported Pedal Types...............................4

Class Compliant...........................................4

Standalone Operation..................................4

Colors..........................................................5

On-Board LED.............................................5

Parameter Feedback...................................5

Value Persistence........................................5

Default Settings...........................................5

Expression Control Application................6

Standalone vs. Plugin Mode........................6

Device and Input Selector............................7

(A) Settings Panel...................................7

(B) Input Selector....................................7

(C) Advanced Settings............................7

(D) Device Selector.................................7

Preset Panel................................................8

Expression and Hihat Pedals.....................9

(A) Input Polarity Switch..........................9

(B) Mode Selector...................................9

(C-D) Channel and Control Change........9

(E) Expression Curve..............................9

(F) Invert...............................................10

(G) Smoothing.......................................10

(H) Calibrate..........................................10

Modes for Expression and Hihat Pedals....11

Control Change.....................................11

Pitch Bend.............................................11

Note and Hihat Modes...........................12

(A) Dynamics.........................................12

(B) Channel...........................................12

(C) Control Change...............................12

(D) Pedal Note......................................12

(E) Splash Note.....................................12

Settings for Sustain Pedals......................13

(A) Input Type.......................................13

(B) Mode Selector.................................13

(C) Invert...............................................13

(D) Toggle.............................................13

(E-H) Channel and Control Change......13

Modes for Sustain Pedals..........................14

Control Change.....................................14

Program Change...................................14

Note On / Off.........................................14

INC / DEC Modes..................................14

Dual CC Mode.......................................14

Key Command......................................15

Dual Key Command..............................15

Settings for Footswitches........................16

Additional Modes for Footswitches............16

Linked Modes........................................16

Advanced Settings..................................17

MIDI Effects Processor..............................17

USB MIDI Loopback..................................17

Routing......................................................17

MIDI Activity Monitor.............................18

Using the MIDI Effects Processor............19

Routing Sources to the Effects Processor..19

Effects Processor Modes...........................19

Channel Jump.......................................19

Channel Inc / Dec..................................20

Transpose.............................................20

Plugin Mode...........................................21

Why Use Plugin Mode?.........................21

Adding the Plugin To Your Project........21

Activating and Deactivating inputs.........21

Using presets........................................22

Updating the Firmware...........................23

Wiring Diagrams....................................24

Charts.....................................................25

MIDI Expression Manual page 2 / 24

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 iO)

•

Powerful preset editor.

•

Advanced modes.

•

On-Board LED.

•

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.

Supported Pedal Types

MIDI Expression devices support expression pedals, hihat controllers, sustain pedals, and both momentary and latch style footswitch pedals. 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,

OSX, Linux, iOS, and Android, without the need to install drivers.

Standalone Operation

The MIDI Expression iO can operate in Standalone Mode without a connection to a computer. The device automatically enters this mode when powered by a USB charger. In standalone mode,

MIDI from MIDI in port is merged with MIDI generated by pedals and is routed out the MIDI Out port.

MIDI Expression Manual page 3 / 24

Colors

MIDI Expression devices come in six different colors and each color has 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 clicking on the firmware version indicator in the Control application.

On-Board LED

Each MIDI Expression has an internal LED that provides visual feedback. 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 LED can be turned off via the Settings

Panel of the Control Application.

Parameter Feedback

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

Input 1

Expression

CC

Sustain

Input 2

CC

Input 3

CC

Input 4

CC

Chan: 1 CC: 7 Chan: 2 CC: 7 Chan: 3 CC: 7 Chan: 4 CC: 7

CC CC CC CC

Hihat

Chan: 1 CC: 64 Chan: 2 CC: 64 Chan: 3 CC: 64 Chan: 4 CC: 64

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

MIDI Expression Manual page 4 / 24

Expression Control Application

As MIDI Expression devices have no physical buttons, any changes you want to make to the presets need to be done using the MIDI Expression Control application. The window of the application is scalable, so you can adjust the size of 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

NOT 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 5 / 24

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. If you have more that one MIDI Expression connected, they will show up on the right.

A

B

C D

(A) Settings Panel

The Settings Panel is revealed when you press the settings button.

The

LED setting turns on and off the LED for the currently selected device. When the

LED is set to 'off', the device LED will not light when pedals are pressed.

The

Auto Select setting automatically selects inputs for editing. It essentially causes the editor to follow whichever pedal is currently being moved.

The

Always on Top setting causes the application to remain up front even when another application is selected. This option is not available in OSX or the plugin version.

This button launches the

Firmware Updater.

This button opens the

Manual.

This button opens a web page where you can quickly

Report a Bug.

(B) Input Selector

When using a multi-input MIDI Expression, the Input Selector allows you to select which input you would like to edit. Conveniently, it also displays what preset is currently in use and also any pedal activity. If no pedal is plugged into an input, then no pedal image is displayed.

(C) Advanced Settings

Clicking on the advanced settings button allows you to setup the device Routing and Global

Channel. Look here

for more information.

(D) Device Selector

If you have more than one MIDI Expression connected, the Device Selector becomes visible and allows you to select the device you want to edit. The control application supports editing up to four devices at one time.

MIDI Expression Manual page 6 / 24

Preset Panel

The Preset Panel comprises a

SENSE button, four Pedal Type images representing the four internal presets of the selected input, as well as a

RESET button.

The

SENSE button is used to engage the Pedal Sensing feature. When enabled, presets are automatically loaded in accordance with the type of pedal plugged into MIDI Expression.

You can override the pedal sensing by manually selecting the Pedal Type preset you want to use.

When manually selecting a Pedal Type, the Pedal Sensing feature is automatically turned off.

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.

The

RESET button returns the settings for each of the presets for the currently selected input to their default values and reactivates the Pedal Sensing feature. If you are using a device with more than one input, the other inputs will not be affected.

Note: You may need to press the switches on your footswitch controller before it'll be properly detected as a footswitch.

MIDI Expression Manual page 7 / 24

Expression and Hihat Pedals

A

B C D

E F G H

(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.

In older versions of the firmware, the polarity had to be manually changed. With versions of the firmware greater than 2.3, the polarity of a pedal is automatically detected and this indicator simply displays the detected polarity.

(B) Mode Selector

Clicking the Mode Selector allows you to change the type of message the device outputs. 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.

(E) Expression Curve

The Expression Curve control allows you to customize the response curve of your pedal. It gives you advanced control of the MIDI output including the minimum and maximum value, as well as the transition between these values. A typical usage scenario of the Expression Curve would be to make a log type pot (volume pedal) respond like a linear one (expression pedal) and vise versa.

When you adjust the min, max, or curve, the thick border of the control lights up indicating that it is on. Clicking anywhere in the background will turn it off again, or more precisely will toggle between on and off. 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.

MIDI Expression Manual page 8 / 24

Here are a few pics showing how the Expression Curve might be used.

(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 simply applies a filter to a pedal's input to prevent large jumps or abrupt changes in the measured value. This is particularly useful in combination with the expression curve control.

Please note that using smoothing adds a small amount of delay. If you need extremely fast response, turn smoothing off.

(H) 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 setting will be stored in the device.

While calibrating, the calibration can be overridden by dragging either side of the green range indicator.

MIDI Expression Manual page 9 / 24

Modes for Expression and Hihat Pedals

By default, MIDI Expression devices are setup to send Control Change messages when used with expression pedals and Hihat mode when used with a hihat controller. However, they can be configured to run in different modes and produce many different types of MIDI messages.

They are grouped into Basic and Advanced categories. The basic group is described below and the advanced group is described on the following page.

Control Change

This is the standard type of message send out by expression pedals. In this mode, the MIDI

Expression sends out a MIDI Control Change value corresponding to the position of the pedal. This type of message is typically used to control knobs or faders.

There are some standardize control values that are useful to know. Some of the more important ones are listed below:

•

CC1 Modulation

•

CC2 Breath Controller

•

CC7 Volume

•

CC10 Pan

Pitch Bend

This mode Is often used with synthesizers to slightly vary the tuning of a note. You can use the

Expression Curve to get more control over the way the pitch bend is applied.

MIDI Expression Manual page 10 / 24

Note and Hihat Modes

By measuring how hard a pedal is pressed, these modes allow you to trigger velocity sensitive

MIDI notes. The two modes work the same except that Note Mode only generates MIDI Notes, while Hihat Mode also sends control change messages representing the position of the pedal.

E

A

B C D E

(A) Dynamics

The dynamics control combines a meter and two controls to adjust the dynamics.

Max Peek

The

Peek control should be adjusted so that the indicator lines up with the peaks of your hardest hits. Setting it lower causes the velocity of your notes to increase and clip and setting it higher causes the velocity of the notes to decrease and never reach maximum.

Meter

Threshold

The

Threshold control acts a threshold that determines how quickly the pedal needs to be pressed before a note is generated. You would typically keep this at zero. If, however, you intend use your MIDI Expression as a hihat controller, then you will likely want to increase this value slightly to avoid unwanted pedal notes.

(B) Channel

This is the MIDI Channel the Control Change values and Notes will be transmitted on.

(C) Control Change

This is the Control Change value that the pedal outputs as it moves. If you simply want to trigger notes, use Note Mode and these messages will not be transmitted. If however you want the pedal to function as a hihat controller, then you will likely need to set this to 4.

(D) Pedal Note

This is the note value that is output when the pedal is pressed down quickly.

(E) Splash Note

If you are using a hihat controller, you will also be able to trigger a second note by releasing the pedal very quickly after triggering a pedal note.

MIDI Expression Manual page 11 / 24

Settings for Sustain Pedals

A

B

C D E F G H

(A) Input Type

This is used to tell MIDI Expression the type of switch your pedal uses. A latch style switch is one that alternates between two values, 'on' or 'off', every time it is pressed, much like a light switch in your home. A momentary switch, on the other hand, is like a button. It switches to 'on' when pressed, and back to the 'off' when released. Select the style to match your pedal.

(B) Mode Selector

Sustain pedals and footswitches are capable sending out several different kinds of messages and

operating in different modes. Look here

for more information about modes available for sustain

pedals.

(C) 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.

(D) Toggle

Using TOGGLE, you can simulate a latching style switch which sends out only one value each time the pedal is pressed. The toggle mode is only available for sustain pedals and footswitches that are set up as momentary switches.

(E-H) 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 12 / 24

Modes for Sustain Pedals

The modes for sustain pedal are organized into four groups, Basic, Inc / Dec, Other, and Effects

Processor. The modes for the Effects Processor are described in a separate section here

, and the

rest of the modes are described below.

Control Change

Control Change messages are useful for toggling On / Off parameters in DAWs and virtual instruments. If using momentary style switch, you'll likely want to use this in combination with the

TOGGLE switch.

Program Change

Program Changes messages are typically used to swap between two different presets in a virtual instrument or plugin.

Note On / Off

Note On / Off messages can be used to trigger samples.

INC / DEC Modes

With MIDI Expression, sustain pedals and footswitches can be used to cycle though a range of

Program Change or Control Change values. You can access this functionality by selecting the mode 'Control Chance INC / DEC' or 'Program Change INC / DEC'. These modes can be very useful for auditioning instrument presets, for example.

If your pedal is a momentary type, you'll be able to cycle both upwards and downwards. By quickly pressing the pedal, the value will increment (go up) by one. By pressing and holding for half a second, the value will decrement (go down) by one. It you cycle past the upper limit, the value will wrap around to the lower limit and vice versa. Note that there is no way to decrement the value for latch type footswitches, so only incrementing the value is supported.

Dual CC Mode

Dual CC Mode is designed to allow users to scroll though presets in virtual instruments using a single sustain pedal or footswitch. The mode works by sending out two different CC values depending on how long the pedal is pressed. Pressing the pedal quickly sends out one CC and pressing and holding for half a second (actually it's 300 ms) sends out the other value.

MIDI Expression Manual page 13 / 24

Key Command

Key commands are currently only available on MIDI Expression devices that use micro USB connectors. MIDI Expression devices with the mini-B USB connectors do not support sending key commands.

This mode allows your pedal to function like a computer keyboard. Clicking on the keyboard icon brings up an onscreen keyboard that allows you to set your key command.

Your pedal can be set up to send a combination of a single regular key (green) and any number of modifiers (blue).

If your pedal is setup as a momentary type, the key command will start when the pedal is pressed and end when the pedal is released. Holding down the pedal will produce similar results to holding down the keys on a real keyboard. If however, your pedal is setup as a latch type, the key commands are sent and released immediately.

Dual Key Command

Dual key command mode allows a pedal to send out two different key commands depending on how long it is pressed.

A short press sends out the first key command, and a long press sends out the second.

Dual key command mode does not work with a latch type switch. If the dual key command mode is selected for a latch pedal, only the first of the two key commands will be sent.

MIDI Expression Manual page 14 / 24

Settings for Footswitches

A footswitch can be thought of as two sustain pedals patched into a single input. In fact, using a suitable adapter (HOSA YPP117, shown on the right), two sustain pedals can be ganged together into a single MIDI Expression input and function as a footswitch.

Because of the similarity to sustain pedals, the settings for footswitches are identical to those of sustain pedal, with the exception of two additional modes that are described below.

Additional Modes for Footswitches

The modes for footswitches include all the modes for sustain pedals, plus two additional ones where both switches control the same parameter. These modes are suffixed with 'Linked'

Linked Modes

These modes function similar to the INC / DEC modes for sustain pedals and as such are typically used for auditioning presets in virtual instruments.

Both modes work in exactly the same way. One pedal increases a parameter and the other decreases it. The modes are called CC INC / DEC Linked and PC INC / DEC Linked and send

Control Change and Program Change values respectively.

By pressing the first switch, the parameter is increased by 1 and by pressing the second switch, the value is decreased by one.

If the pedal you are using has momentary type switches, long pressing the first switch will increase the value by 10, and long pressing the second switch will decrease the value by 10. Be sure to have the input type set to momentary to take advantage of the long press functionality.

MIDI Expression Manual page 15 / 24

Advanced Settings

The advanced settings panel can be opened by clicking on the settings button.

Settings Button

The graphic below in the Advanced Setting Panel represents the various sources of MIDI for a

MIDI Expression. Below we see the iO has three pedal inputs, a MIDI In DIN as well as the USB connection available as sources.

MIDI Effects Processor

The Effects Processor allows you to process the MIDI messages running through the device. Each source of MIDI can be routed through the Effect Processor by clicking on the icon below the

source. The MIDI Effects processor is described in greater detail here

.

USB MIDI Loopback

The original MIDI Expression as well as the Quattro have a 'Loopback' control. When the control is enabled, any MIDI entering the device via the USB connection, is sent right back out over the USB.

Used in combination with the MIDI Effects Processor, this feature allows you re-channelize and transpose the USB MIDI data. The MIDI Expression iO also has this feature, but it's turned on and off via its routing settings which are described on the next page.

Note: Using the Loopback feature will introduce a small amount of latency and jitter. To minimize the latency, be sure to run your system with low sample buffers for live performance.

Routing

Routing is only available on the MIDI Expression iO. The MIDI from each source can be freely routed to either the USB host, the MIDI Out DIN, or both (or neither). To adjust the routing for a

MIDI source, simply click on either the USB or MIDI DIN icon below each source.

MIDI Expression Manual page 16 / 24

NOTE: When the MIDI Expression iO is powered by a USB charger or battery pack, the device automatically goes into standalone mode. In standalone mode, MIDI from the MIDI in port is merged with the pedal inputs and sent out through the MIDI Out port.

MIDI Activity Monitor

For MIDI Expression iO devices, the Settings button doubles as a MIDI Activity Monitor giving you feedback about how MIDI is entering and leaving your device.

MIDI Activity Monitor

IN

IN

OUT

MIDI Expression Manual page 17 / 24

Using the MIDI Effects Processor

Perhaps the name "Effects Processor" is a bit of a stretch at this point in time, but if gives you an idea of where this feature is ultimately headed. For now, this feature allows you to 'affect' the MIDI channel and transpose values for MIDI messages running through the device. Used together with the Effects Processor modes for sustain and footswitch type pedals, the Effects processor provides a simple way to dynamically manipulate MIDI messages going through the device.

Routing Sources to the Effects Processor

Each source of MIDI can be routed through the Effect Processor by clicking on the icon below the source. In the graphic above, only messages from the full size MIDI in DIN are being sent to the MIDI Effects Processor.

MIDI Effects Processor Settings

The effects processor currently allows for transforming the channel and pitch of messages that are sent to it.

Input Channel

This input channel acts as a sort of filter. When unchecked, the input channel is disabled and all messages from all MIDI channels are processed.

When checked, however, only messages matching the Input Channel are processed. This is very useful if you are processing MIDI from a keyboard that is setup with a channel split. This would allow you to keep one region of your keyboard set to play a specific channel, while another region could be controlled using a pedal to transform its MIDI channel.

Output Channel and Transpose

Messages that enter the Effects Processor are transformed using these settings. They can be dynamically controlled using pedals. See "Effects Processor Modes" on the following page for more details.

MIDI Expression Manual page 18 / 24

Effects Processor Modes

The Effects Processor modes allow you to adjust values of the Effects Processor using pedals.

They offer you three different ways to use a pedal (sustain or footswitch) to control the Effects

Processor.

Channel Jump

The Channel Jump mode allows you to temporarily switch from the Effect Output Channel to one specified by this mode when the pedal is pressed, and back again when the pedal is released.

This can also be used with the 'Toggle' option, such that pressing the pedal once, changes to the specified channel, and pressing it a second time, changes it back.

You can have any number of pedals assigned to a Channel Jump mode, allowing you to quickly switch between channels. The value in the pedal graphic always shows you the current Channel of the Effects processor.

Channel Inc / Dec

This mode allows you to increment and decrement the MIDI Effects channel using a signal pedal.

A quick press increments the channel value, and a long press decrements the value. For footswitch pedals, there's also a linked Channel Inc / Dec mode allowing you to use one switch to increment the channel and the other switch to decrement the value.

Transpose

The Transpose mode allows you to use a pedal to toggle learning a transpose value. When the pedal is pressed and held, the device monitors is USB MIDI In / MIDI In Din for a note message and uses that note to set the transpose value. If the pedal is released before the device 'sees' a note, the process is canceled.

The amount of transpose is set by comparing the value of the note to middle C (60). If the value to the note is middle C, the transpose value is set to 0. If the note value is C# (61), the transpose value is set to +1. If it the note is the F above middle C (695 it'll see the transpose value to +5. The amount of transpose can be set between -60 and +64.

If the Control Application is open when you press the your pedal to learn the transpose value, the graphics below is displayed.

MIDI Expression Manual page 19 / 24

Plugin Mode

Using the plugin version of the Control Application allows you to save and load custom configurations for your MIDI Expression devices along with your projects in your audio sequencer. The plugin version of the control application is available in VST and AU formats for Windows and

OSX.

If you haven't already read about the differences between the Standalone and Plugin versions of

the control application, I recommend you read this

first.

Why Use Plugin Mode?

Most people will likely want to use the standalone Control Application, but here's a quick list of situations where you might want to consider the Plugin version.

•

You want to temporarily change the function of a pedal for a particular project.

•

You want to be able to store and recall complete configurations for all your MIDI Expression devices with a click of a button.

•

You want to use host presets to quickly change the function of your pedal to suit aspects of your work flow.

•

You use a INC / DEC mode and you want the current value of saved along with your project so it's not lost when you switch to a new project.

Adding the Plugin To Your Project

The plugin version of the Control Application is an audio effect and as such, you can insert it on an audio track much like you would any other audio effect.

The plugin does not actually change the audio passing though it, so you can safely insert it pretty much anywhere in your project, but you should probably avoid putting it on any track that you might freeze.

Activating and Deactivating inputs

The plugin version works by putting MIDI Expression inputs into 'plugin mode'. In this mode, settings for the inputs are managed by the plugin, and any changes you make to the presets are saved within the plugin itself.

Before the plugin takes control of a MIDI Expression input, the input needs to be activated first.

Any inputs that are not activated will not be managed by the plugin and their settings can still be adjusted using the regular control application.

MIDI Expression Manual page 20 / 24

When an input is deactivated, the settings from the plugin are offloaded and the settings saved on the device itself are restored.

Activating and deactivating an input effectively lets you switch between using the preset stored in the plugin and the preset stored in the device.

Similarly, when the plugin is removed or the project is closed, all settings stored in the plugin will be offloaded and the settings stored on the devices themselves will be restored.

Toggling between activating and deactivating an input effectively lets you swap between two configurations for that input.

Using presets

Taking advantage of host sequencer's preset system, you can load and save settings for any number of MIDI Expressions with a single mouse click.

MIDI Expression Manual page 21 / 24

Updating the Firmware

The MIDI Expression firmware is periodically updated to add new features or fix bugs. The latest firmware for MIDI Expression devices is included with the MIDI Expression Control application.

The firmware can be updated or changed revealing the Settings Panel and clicking on the firmware update button, which is circled in red above. Please note that the iOS version of the Control

Application does not support updating device firmware.

If you have more than one MIDI Expression connected to the same computer, you might want to change the firmware of one of the devices in order to change the name of its MIDI port. To change the name of the MIDI port, select a different color using the Color Chooser in the bottom right hand corner and the click UPDATE.

MIDI Expression Manual page 22 / 24

Wiring Diagrams

Most commercially available pedals should work fine with MIDI Expression. The wiring diagrams below are included for DIY enthusiasts who intend to build their own controllers.

Expression Pedal

(straight polarity) power wiper ground

Potentiometer

Expression Pedal

(reversed polarity) power wiper ground

Potentiometer

Sustain Pedal Dual Footswitch

A

B

Hihat Controller

force sentisive resistor

MIDI Expression Manual page 23 / 24

Charts

-

Function

Channel

Notes

Velocity

Aftertouch

PitchBend

Control Change

Program Change

System Exclusive

System Real-Time

System Common

RPN / NRPN

X - Not Used

MIDI Expre ssion MIDI Impleme nt ation

Transmit Respond Passthru Remarks

1 - 16 1 - 16 1 - 16 Learn Note

0 - 127 0 - 127 0 - 127 Learn Note

1 - 127

X

O

0 - 127

0 - 127

O

X

X

X

X

X

X

0 - 127

X

O

X

X

X

0 - 127

O

O 14 bit

0 - 127 Parameter Feedback

0 - 127

O

O

O

O

Control, Display

Updated October 4th 2016

O - Used

MIDI Expression Manual page 24 / 24