MIDI Control
The MIDI Control feature in Scratch Live
provides the ability to map MIDI controls
to Scratch Live controls, and thus control
the functions of Scratch Live using MIDI
controllers such as keyboards, triggers,
sliders, and knobs. Integrating MIDI
controllers into your Scratch Live setup
can improve live performance usability,
such as hitting pads on a MIDI controller
to trigger loops and cue points.
MIDI Controller Setup
The process of setting up a MIDI
controller for use with Scratch Live
will vary depending on the hardware in
question. Many devices can connect to
a computer using MIDI over USB, and
will either be supported directly by your
operating system, or require installation of
drivers and configuration utility software.
Follow the manufacturers instructions for
installation.
Other controllers may solely use a MIDI
out connector to send control messages,
and will require a separate MIDI interface
unit to communicate to software.
Generally the MIDI interface will come with
drivers and configuration tools which pass
your controller’s output onto an available
MIDI channel, which can be used by
Scratch Live.
Once your controller is installed and
functioning correctly, use these directions
for assigning controls.
Assigning Controls
To enable MIDI assign mode,
click the MIDI button. Hovering
the mouse pointer over a control will bring
up the MIDI assignment box, showing the
current assignment status.
To assign a MIDI control, click on the
control in Scratch Live, then move the
MIDI control. The MIDI assignment box
should update to show it has mapped the
controls to one-another.
To un-assign a MIDI control, click on the
control in Scratch Live, and press return
on your computer keyboard.
While in MIDI assign mode, controls
which have MIDI inputs assigned show a
green box indicator around them.
NOTE: Once in MIDI assign mode,
Scratch Live controls will no longer
respond directly to the mouse. If you
need to change a control using the
mouse, disable MIDI assign mode.
MIDI Platters
The Scratch Live Virtual Decks are not
user assignable to MIDI control. MIDI
devices with platters on them all send
different data so user mapping is not
possible. To control the platter use a
natively supported controller.
Assigning MIDI to Other Controls
Controls which
are not normally
visible are available for assignment when
in MIDI assign mode by clicking on the
Show MIDI Panel
button. This will open
up a panel allowing MIDI assignment for
controls including library navigation as
well as additional Deck functions such as
fine pitch control and extended cue and
looping features.
Ctrl-Click Functionality
Some Scratch Live controls on the GUI
have additional functionality assigned
to ctrl-click. You can assign ctrl-click
functionality to a MIDI control, alongside
the normal functionality. For example, ctrl-
click on the INT mode pitch slider returns
pitch to zero. To assign this to MIDI
control, enter MIDI assign mode, ctrl-click
on the slider, and then assign one of the
pads to it. When you press the pad, pitch
goes to 0.
Presets
MIDI presets are accessible in the MIDI
panel of the Setup screen. By default,
the current MIDI assignments in Scratch
Live are automatically remembered and
loaded next time you start the program.
The preset panel allows you to save and
recall several different MIDI setups. This
is useful if you are using several MIDI
devices or want to quickly switch MIDI
setups without having to reassign all your
controls.
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