Gtak user manual
Table of Contents
Gtak user manual
1 Introduction..................................................1
2 Requirements...............................................2
3 Getting started..............................................2
3.1 Download..............................................2
3.2 Locate the Kontakt3 Library.................2
3.3 Install....................................................3
3.4 Guitar to MIDI converter setup............3
3.5 Start Kontakt3.......................................4
4 Gtak Basics....................................................5
4.1 The Gtak panel......................................5
4.2 String enable.........................................6
4.3 Fret filter...............................................6
4.4 Pick filter...............................................6
4.5 Pitchbend quantization.........................6
4.6 CC blocking...........................................7
5 Gtak Pedal control........................................7
5.1 Pedal Mutes...........................................8
5.2 Pedal Holds...........................................8
5.3 Pedal Sustains.......................................8
5.4 Pedal Sus/Hold.....................................8
5.5 Mute on CCs..........................................8
5.6 Pedalboard example.............................9
6 Gtak in the Kontakt3 Library.......................9
6.1 Drum kits.............................................10
6.2 Master FX............................................10
6.3 VSL legato instruments.......................10
6.4 Key switched instruments...................11
6.5 Monophonic instruments....................11
6.6 Harmonized Instruments....................12
6.7 Arpeggiator Instruments.....................12
6.8 Micro Tuned Instruments...................12
6.9 Getting the most out of Kontakt..........13
7 The Config panel.........................................13
7.1 CC blocking..........................................13
7.2 Transposition......................................14
7.3 Open string settings.............................14
7.4 Base channel........................................15
7.5 Strings..................................................15
7.6 Pitchbend range...................................15
7.7 Pick Control settings............................15
7.8 New note velocity................................15
7.9 Sustain 1 note/string...........................15
7.10 Allow other MIDI channels...............15
8 Using Gtak with other instruments............15
9 Setting up Kontakt......................................16
9.1 Setting the default multi......................16
9.2 Setting MIDI Omni.............................16
9.3 Configuring Quick-load menus...........17
10 Custom Gtak downloads...........................17
11 Troubleshooting.........................................18
version 1.0
1 Introduction
Gtak makes it easy to use Kontakt3 with a
Guitar to MIDI converter. It comes preloaded
into copies of 1079 instruments from the
Kontakt3 library. You can also load it into any
other Kontakt3 instruments you create or buy.
Gtak makes Kontakt3 instruments understand
all the pitchbend information that Guitar to
MIDI converters send, so there is no need to
use one instrument for each string.
Gtak also lets you control how each
instrument responds to your playing – for
instance, which strings and frets play each
instrument. Gtak provides a comprehensive
pedal control section and smart controller
The supplied Kontakt3 library instruments
have also been extensively tweaked to make
them work better with Guitar to MIDI
Note: we do not supply the samples from the
Kontakt3 library, just tweaked instrument
files. You must have the Kontakt3 library
installed to use these instrument files.
This manual describes how to install and
operate Gtak, and also how to use the Gtak
instruments in the Kontakt3 library. You can
probably figure out a lot about how to use
Gtak just by playing around with it. However,
as the library is so big, it is probably a good
idea to read through all of the section on the
library (Section 6), or you might miss
something interesting.
16:50 - 28/01/09
2 Requirements
3 Getting started
Before starting you must have already
installed Kontakt3 and its Instrument Library.
See the Kontakt3 documentation for details of
how to do this. Make sure you have installed
any updates to Kontakt3 and the Library
available from Native Instruments.
The following subsections explain how to get
Gtak working on your computer. The steps
You should also be able to run Kontakt3, get
MIDI into it from your Guitar to MIDI
converter and get sound out of Kontakt3 to
your soundcard.
3) Install Gtak into your Kontakt3 Library
1) Download Gtak
2) Find your Kontakt3 Library folder
4) Setup your Guitar to MIDI converter
The following sections explain how to do this.
You do not need to know much else about
Kontakt3 to be able to use Gtak. However, you
should understand some basic Kontakt terms
such as:
3.1 Download
To download Gtak:
1) Go to
2) If you are not already logged in, type your
user name and password into the boxes and
click Log in.
3) You should now see a list of your products,
including Gtak.
These are all explained in the first few pages of
the Kontakt3 manual.
4) Click the Download link for Gtak. The
download is supplied as a zip file.
5) In Windows XP (Internet Explorer): you
will then see a box asking what to do with
the file, choose Save (do not choose Open).
A new box will appear asking where to save
the file, choose any convenient folder.
In OSX (Safari) the file should be
automatically downloaded and be unzipped
in you downloads folder.
Advanced users can download customised
versions of Gtak, see section 10 for details.
3.2 Locate the Kontakt3 Library
The Gtak files must be installed in the Kontakt
3 library folder, so that the sample paths in the
Gtak instruments work.
To find your Kontakt3 library folder:
1) Open Kontakt3, either Standalone or in a
2) Click the Gear Icon to open the Options
3) Click the Load / Import Tab
4) The library path is shown near the bottom.
After installing Gtak, your Kontakt3 library
folder should look something like this:
3.4 Guitar to MIDI converter setup
Certain parameters in your Guitar to MIDI
converter need to be set to match those in
Gtak so that the two can communicate
correctly. These values are configurable in
Gtak, but in this section we will assume that
you use the default values.
Note: The library path might be incorrect or
not set at all. In this case you should
manually locate the library and enter the
path in the Options Dialog yourself.
3.3 Install
In general there is no need to have different
presets for different sounds because Gtak
handles things such as pitchbend quantization
and stores the settings with each Kontakt3
The Gtak folder needs to be placed in the
Kontakt3 library folder which you located in
the previous step.
In OSX (Safari) the zip file you downloaded
should have been automatically unzipped and
the resulting Gtak folder placed in your
downloads folder. Navigate to your downloads
folder and then move the Gtak folder into your
Kontakt3 library folder.
The settings you should make are:
1) Strings send on separate MIDI channels 1
to 6.
2) Pitchbend range: +/- 12 Semitones.
3) Pitchbend unquantized so it changes
smoothly, not in semitone steps (so, on
Roland models do not set Chromatic
In Windows XP:
1) Navigate to the folder where you saved the
downloaded zip file (which should be called
something like
4) On/Off Pedals send MIDI Continuous
Controllers (CC's) and should send 0 when
up and 127 when pressed down. Gtak's
default pedal is CC 64. More complicated
setups with multiple pedals are discussed in
section 5.6.
2) Right click on the zip file and select Extract
3) The Extraction Wizard should appear. Click
4) It should then ask you to select a
destination to extract to. Click Browse,
navigate to your Kontakt 3 folder and click
OK. The destination should be something
like F:\Native Instruments\Sample
Libraries\Kontakt 3 Library.
5) If you want to control Volume using an
expression pedal or the wheel controller on
your Guitar to MIDI pickup, set this to send
CC 7.
The following subsections give example
settings for a couple of specific converters.
5) Click Next then Finish
3.4.1 Axon AX100MkII
3.5 Start Kontakt3
The settings can either be made using the
Computer Editor, or the front panel buttons.
Assuming you are using the front panel
buttons, in GLOBAL mode, set parameters:
Kontakt3 can be run either standalone or as a
plugin in a sequencer. Gtak does not need any
special settings when Kontakt3 is running
standalone. Just set the MIDI and audio
settings so that your Guitar to MIDI converter
is routed to Kontakt3 and Kontakt3 is routed
to your soundcard outputs.
If you are running Kontakt3 in a sequencer,
you must make sure that all the MIDI
channels are sent to Kontakt3.
3) (optional) SND PBENDRANGE = OFF
Then select an unused preset (which will be
the preset you use all the time with Gtak) and
in PRESET mode press EDIT, set parameters:
For instance, in Cubase4 you must load
Kontakt3 in the VST Instrument Rack (not an
Instrument Track) and create a MIDI track
that is routed to Kontakt3. This MIDI track's
MIDI channel must be set to Any as show
1) STRING MODE = SEP (Separate)
2) HOLD MODE = CNTRL (Controller)
5) QUANTIZE = OFF (Pitchbend quantize off)
6) If you want to use Pick Control:
b) PICK VAL1 = 0
c) PICK VAL2 = 127
Next, load the Gtak multi:
QUANTIZE and PICK CONTRL are parameters of
1) Click the disk icon in Kontakt3 to open the
file menu. Click load....
the split zone, so to reach these you have to
select the split (you should only have one
split in this preset). See the Axon manual for
more details.
Name the preset something like “Gtak” and
save it. Do not set up any string or pick splits,
these are handled by Gtak.
3.4.2 Roland GI-20
Made the following settings on the Roland
2) Navigate to the Gtak folder (in your
Kontakt3 library folder) and select
gtak_multi.nkm . Click Open.
1) Transmission Mode to Mono.
For the latest information on setting up
Kontakt with different sequencers visit the
Gtak forum at .
3) BEND RANGE = 12
4) (optional) Foot switch 1 sends CC64.
5) (optional) GK Volume sends CC7.
6) Make sure the Expression pedals are not set
to send pitchbend.
See the GI-20 manual for details of how to
make these settings.
If the instrument does not play properly see
Section 11.
One final optional step: Gtak has built in help.
When you hover over a control with your
mouse help appears in the info pane. To show
the info pane click the “i” icon as shown below:
3) Click Yes to replace the current multi.
Note: Gtak instruments only work in a Gtak
multi. This is for arcane technical reasons the Gtak multi contains magic pixie dust
without which Gtak can't work.
Note: there seems to be a bug in Kontakt3
where the Info pane help sometimes stops
working when more than one instrument is
To make the Gtak multi the default see
Section 9.1 .
Now load a Gtak instrument:
4 Gtak Basics
1) Click the disk icon in Kontakt3 to open the
file menu. Click load....
We have set sensible defaults for all the
instruments in the Kontakt3 Library, so often
you will not need to make any changes.
However, if you want to have things like
different instruments playing on different
strings or use pedal control you have to make
settings on the Gtak Panel.
2) Navigate to one of the folders under the
Gtak folder (eg Gtak\Band\1 – Horns)
3) Select an instrument (eg Sax Section.nki)
and click open.
There are many other ways of loading
instruments. The fastest is the Quick-load
menu. To make Gtak instruments appear in
this menu see Section 9.3 .
If you want to do more advanced things such
as configure a guitar in a non-standard tuning,
transpose strings, or change various other
settings you will use the Config Panel which is
described in Section 6.9.
4) Click the down arrow by Midi ch: and
select omni.
4.1 The Gtak panel
Gtak is a KSP script with a Performance View,
this means that its controls appear in the
instrument header (unless the instrument is
minimized). Each Kontakt3 instrument can
contain up to 5 KSP scripts. If more than one
script has a Performance View then tabs will
appear at the bottom of the instrument to
allow you to select which script's panel to
show. In this case, to switch from another
panel to Gtak's panel click on the Gtak tab as
To make Omni mode the default for loaded
instruments see Section 9.2 .
5) Play!
shown below.
For example:
If Low Fret = 0 and Hi Fret = 7 the
instrument will play when you play notes
anywhere from open strings up to the 7th
If Low Fret = 1 and Hi Fret = 1 the
instrument will only play when you play
on the first fret, so you will only be able to
play F,C,G#,D# and A#!
If your guitar is in a non-standard tuning
(or you are using a bass) and you want to
use the fret filter, you must set the open
string notes in the Config panel. See Section
We have modified many of the other KSP
scripts in the Kontakt3 Library to make
everything work properly. These scripts
have been renamed Original_name (Gtak).
4.2 String enable
4.4 Pick filter
The Pick filter is an Axon-only feature that lets
you set a range of picking positions that the
instrument responds to. For this to work you
have the set the Axon to send the picking
position as a CC and configure Gtak to
respond to this CC. If the pick filter is
currently hidden see Section 7.7 for details of
how to enable it.
You can select which strings the instrument
responds to using the string enable buttons at
the top of the panel.
In the example shown above, the instrument
will play when you play on strings 1, 2, 3 and 4
(the high E, B, G and D strings), but will
ignore any notes on strings 5 and 6 (the A and
low E strings).
As each instrument has its own set of string
enable buttons you can assign instruments to
strings in any way you like.
Turn on the Pick filter by clicking the Pick
Filter button. Then use the LowPick and
HiPick knobs to set the range the instrument
should respond to. The bridge possition is 0
and the start of the neck is 127.
4.3 Fret filter
The Fret filter lets you set a fret range that the
instrument responds to. When the fret filter is
off, the instrument will respond to notes
played anywhere on the neck. Turn on the fret
filter by clicking on the Fret filter button.
Set the range of frets you want the instrument
to respond to using the Low Fret and Hi Fret
So, for example, if LowPick=0 and HiPick=64
the instrument will play when you pick
anywhere between the bridge and a point
about half way towards the neck. Then you can
set up another instrument to play in the other
positions by setting LowPick=65 and
4.5 Pitchbend quantization
Guitar to MIDI converters send pitchbend
when you play bends, slides, hammer ons and
pull offs. Different instruments require
different handling of pitchbend. For instance,
a piano does not sound natural if you can bend
the strings!
5 Gtak Pedal control
Pedal control is one of the most useful features
of Gtak. The Kontakt3 rack can hold up to 64
instruments, and using pedal control you can
switch between them on the fly.
Pitchbend quantization is the process of
turning the gradual pitch changes from the
Guitar to MIDI converters into semitone
steps. Some Guitar to MIDI converters refer to
this as Chromatic Mode. Although most Guitar
to MIDI converters can do pitchbend
quantization, it is better to do it in Gtak
because then each instruments can have its
own setting and the setting is stored with the
If you have one MIDI pedal you can switch
between two instruments, or have one
instrument hold while you solo over the top.
Two pedals opens up more possibilities. With
a 10 pedal MIDI pedal board things really start
to get interesting!
The pedal settings are below the fret filter:
Gtak has three PBQuant modes:
1) Off: No pitchbend quantization
2) On: Pitchbend is quantizated to semitone
3) Auto: Pitchbend quantization is off when
single notes are played (so you can use
vibrato and bends), but is turned on when
more than one note is played (so chords
sound perfectly in tune)
From left to right the controls are:
Pedal mode: Off, Hold, Sustain, Hold/Sus
or Mute.
 when up / when down: sets
which way round
the pedal works. In the example above the
instrument will mute when the pedal is up.
 Pedal CC: the CC
number that this
instrument will respond to.
 >>Pedal<< : this
shows the current state of
this instrument's pedal. You can also click it
to simulate pressing the pedal for testing.
Next to the PBQuant is the PB->New note
button. When this is on a new note is triggered
when the pitchbend is sufficient. So, hammer
ons, pulloffs and slides will trigger new notes
(bends too, but this feels pretty strange!).
This mode is the default for pianos as it
sounds most natural.
When choosing a Pedal CC you should avoid
103 (which Gtak uses) and 65, 66, 126 and
127 (which Kontakt3 instruments use).
The second row of controls lets you mute
whenever any of a range of pedals is down and
is described in Section 5.5.
You can turn on PB->New note in any of the
PBQuant modes.
The relative velocity of the new note is set in
the Config panel, see section 7.8.
4.6 CC blocking
The pedal can perform different functions,
choose one by clicking the Pedal: button:
By default Gtak is set to CCblock:Smart mode.
This means that it will block CCs when a
different instrument is playing. So, for
instance, CC7 (volume) will only control the
volume of the instrument that is currently
playing. See Section 7.1 for more details of this
and the other CC blocking modes.
When set to Off the pedal does nothing in
Gtak. The following sections describe the
other modes.
When Off, Gtak passes the pedal CC to the
Kontakt Instrument, for instance in pianos
CC64 controls the damper pedal.
5.1 Pedal Mutes
Use Pedal Holds... when down if you want
things to work the other way round. In this
mode you can play the backing instrument
normally, and then step on the pedal to hold
the backing instrument while you play another
Pedal Mutes is the simplest pedal mode.
When Pedal Mutes... when up is set and the
pedal is up, the instrument will not play new
notes. Existing notes are not cut off when you
lift the pedal, but continue until the string that
played them stops sounding.
5.3 Pedal Sustains
You can use Pedal mutes to switch between
two instruments by setting one to mute when
up and the other to mute when down as shown
Pedal Sustains... when down works in a
similar way to a piano's sustain pedal. When
the pedal is up the instrument plays normally.
When the pedal is down, notes sustain. In
other words, the instrument notes keep
playing even once the guitar's string has
stopped sounding. Releasing the pedal stops
any notes that are sustaining.
You can choose between sustaining just one
note per string (the default) or all played notes
in the Config panel. See Section 7.9 for more
Pedal Sustains... when up is useful when
you want an instrument to sustain most, or all,
of the time. We have set all Kontakt3 library
instruments with drum machines to this
mode, so you can play a note and the drum
pattern keeps playing even after the note has
5.2 Pedal Holds
Pedal Holds mode is used when you want an
instrument to keep playing while you play
another instrument.
5.4 Pedal Sus/Hold
If you select Pedal Holds... when up then the
instrument will not play until you press the
pedal down. Once the pedal is down the
instrument will play as normal. When you
release the pedal any playing notes will be
held, in other words they will continue to
sound. However, no new notes will sound.
Pedal:Sus/Hold is a combination of the
sustain and hold modes. When this mode is
selected the when up/down button toggles
between Up:Sus/Down:Hold and the opposite:
With Up:Hold/Down:Sus notes are held when
the pedal is up and sustained when the pedal
is down. This is useful when you want to use
an instrument that has a drum machine as a
backing instrument because you can play
different patterns with the pedal down, then
release the pedal and the last pattern keeps
playing while you play other instruments.
In Pedal Holds... when up mode any held
notes that are playing at the time the pedal is
pressed down are stopped instantly. So,
quickly pressing and releasing the pedal
without playing any new notes will stop the
instrument sounding.
If you use Pedal Holds... when up for a
backing instrument (a pad for example) then
normally you would set Pedal Mutes... when
down for the lead instrument, so that it does
not play while you are playing the backing
To stop notes playing press and release the
pedal quickly without playing any new notes.
5.5 Mute on CCs
Mute on CCs mutes the instrument whenever
If you have more than one backing
instrument, you should use Mute on CCs for
the lead instrument(s) see Section 5.5.
any pedal in the range of CCs specified is
Pedal Mode
To turn it on and off click the Mute on CCs
button. Set the range of CCs using the From CC
and To CC controls. The field to the right of To
CC displays information about what is muting
the instrument so you can keep track of what
is happening. When Mute on CCs is on, the
instrument will mute when any pedal in the
range is down – except the instrument's own
Pedal CC. So, in the example above any CC
from 55 to 64 (inclusive) would mute the
Hold when up
Arp 1
Hold when up
Arp 2
Hold when up
Drum 1
Drum 2
Lead 1
Mute when up
Lead 2
Mute when up
Lead 3
Mute when up
Lead 4
Mute when up
Lead 5
Mute when up
Then save the multi so we don't loose all that
Mute on CCs is very useful in lead instruments
6 Gtak in the Kontakt3 Library
when you have several backing instruments
held by different pedals (using Pedal
holds... when up). By setting the range to
cover all the backing instruments' pedals you
can ensure that the lead instrument does not
play while you are playing any of backing
We have tweaked the Kontakt3 Library in
many ways to make it easy to use with Guitar
to MIDI converters. Most obviously, we have
added the Gtak script to each instrument so
you do not have to load it yourself.
5.6 Pedalboard example
The transpose setting in Gtak has been set
so that the guitar can play the most notes
possible. For instance it is set to -24 (a shift
down of two octaves) for the Tuba. This
means a guitar can play the Tuba's lowest
Pitchbend quantization has been set to a
sensible value for each instrument. For
instance, for pianos and organs pitchbend is
set to quantized and new notes are
triggered, whereas for most stringed
instruments pitchbend quantization is set to
We have extended the range of all
instruments to match the guitar. For
instance, the violins originally only played
down to G, by changing the range the lowest
sample we have made them play down to E.
This is slightly less realistic, but much more
We have also made more subtle changes:
For the purposes of this example let's assume
we have a 10 pedal pedalboard that sends on
CC's 51 to 60.
Assume we have 5 lead instruments and 5
backing instruments (a pad, two arpeggiators
and two drum machines).
The first step is to set up the pedal board. For
the lead instruments we set the pedals to be
latching (press to turn off and press again to
turn off). This will let us play any or all of
them at once.
For the backing instruments we set the the
pedals to be momentary (only on while
pressed down). This will let us press the pedal
down, play something to be held and then
release the pedal.
Then we could make following settings in Gtak
for each instrument:
We have also had to alter many of the scripts
in the Kontakt3 library to work with Gtak
(mostly because of strange behaviour in the
KSP scripting system). This should not effect
you unless you want to load Gtak into your
own instruments derived from the library
instruments, see Section 8 for more details.
 Synth/7 - Synth Drums/
There are many instruments in
Urban Beats/, but only the ones in
Urban Beats/1 – Performances/ have
patterns already programmed.
6.1 Drum kits
The Kontakt3 library's drum kits and Urban
Beats instruments contain a pattern based
sequencer called either Drum Computer or
Groovebox (they are both the same thing).
6.2 Master FX
Instruments in the Urban Beats collection also
have a Master FX section which lets you set 12
presets for the Instrument's master effects.
This gives you instant access to a range of
effects such as delays, filter and saturation.
To see the control panel for them click the
Drum Computer or Groovebox tab. It seems
that Native Instruments have not documented
how to use these, but it is not too hard to
figure out. There are 6 tracks and 12 patterns.
You can choose the note each track plays and
program your own patterns.
We have configured Gtak in these instruments
so that the 12 presets map to notes on the A
string (using the transpose settings in the Gtak
Config Panel). Playing the open string sets the
default preset. Playing a note on frets 1 to 12
selects preset 1 to 12.
We have configured Gtak in these instruments
so that the 12 patterns of the sequencer map to
notes on the low E string (using the transpose
settings in the Gtak Config Panel). Playing the
open string stops playback. Playing a note on
frets 1 to 12 starts patterns 1 to 12 playing
(playing the same note again is another way to
stop playback). Playing anywhere else plays
single drum hits.
6.3 VSL legato instruments
The VSL legato instruments have 24 extra
samples for each normal sample. The extra
samples are played legato starting from a
different note (from 12 semitones below to 12
semitones above). This greatly increases the
realism of legato playing.
We have also set these instruments to Pedal
Sustain... when up (and the pedal CC to 63)
so that the patterns keep playing until you
stop them by playing the open string.
If you want to use a pedal to hold the pattern
while you play something else on the low E
string, you should use Up:Hold/Down:Sus
pedal mode (see Section 5.4).
The standard VSL legato script was written for
keyboard players, who can only play legato by
playing single notes and overlapping the starts
and ends. This limits legato playing to playing
one note at a time.
When running Kontakt3 standalone you can
set the tempo of the played patterns by
clicking on the Metronome/Tuning fork icon.
When running as a plugin the tempo is set by
the sequencer.
Guitarists play legato using hammers, slides
and bends - sometimes on more than one
string. Gtak harnesses this power by detecting
legato playing, triggering a new note, and
telling the custom Gtak Legato script to
trigger one of the special legato samples. This
means you can play legato chords.
You will find instruments with Drum Computer
or Groovebox in the following sections:
 Urban Beats/
 Vintage/Drum Machines/
 Band/7 - Drum Kits/
names that end in (all) or (all X) (the X
versions also use CC1 to fade between different
velocity samples). The following table shows
which notes to play to switch to which
articulation. Note that the strings (violin, cello
etc) have more articulations available than the
brass (trumpet etc.) and woodwind (oboe,
clarinet etc.) instruments.
The Kontakt3 library has 5 of these special
legato instruments:
 Violin ensemble (legato)
 Cello ensemble (legato)
Brass /
staccato 1
Fret 1
Fret 1
 Viola ensemble (legato)
staccato 2
Fret 2
Fret 2
 Flute (legato)
Fret 3
Fret 3
 French Horn ensemble (legato)
Fret 4
Fret 5
Fret 4
Fret 6
Fret 5
Fret 7
They are in the Orchestral/ section under the
appropriate instrument. For instance the
violin is in Orchestral/1 - VSL Strings/01
Violin Ensemble/04 Legato Instruments/.
There are also instruments whose names end
in (stac 1+2) and (stac 1+2 X) which only
have the two staccato articulations.
To quickly hear the legato effect in action, load
up the French Horn ensemble (legato). Then
try playing an open string and hammering on
the 7th fret.
6.5 Monophonic instruments
6.4 Key switched instruments
Many instruments are monophonic – they can
only play one note at a time. Where this is
important to the sound produced, the
Kontakt3 library instruments implement a
monophonic mode (mono mode) using a KSP
script called Unisono/Portamento.
The Orchestra section contains instruments
from the VSL library. Some of these
instruments can change articulations (such as
staccato or pizzicato) using key switching. This
means that when you play a particular note
the instrument switches to a different
articulation and all the following notes are
played with that articulation.
We have made this script work with Gtak, but
as monophonic playing is not natural to
guitars and Native Instruments have not really
documented this very well, we will take a
quick look at it here.
We have modified the library so that all the
key switching notes are in the same place, and
have set Gtak so that notes on the low E string
are transposed to these notes.
One group of instruments where mono mode
is important is lead synths, because many of
their sounds were born in a time when it was
too expensive to implement more than one
note! In these instruments you will find the
Unisono/Portamento script has a Performance
view like the one shown below.
The instruments that use key switching have
6.6 Harmonized Instruments
There are several different versions of this
script used in the library, and not all of them
look exactly the same (or have performance
views), but the all do a similar job.
Many instruments have a Harmonization
function that plays extra harmony notes at
intervals you can set. Sometimes this appears
as a separate Harmonize panel and sometimes
it is integrated into the Instrument panel.
This panel lets you turn on and off mono
mode. It also lets you set which note has
priority when more than one note is played,
and what happens when the note that had
priority stops sounding (Key-up action). If
legato is on then mono mode is implemented
by bending the note that is playing. If legato
mode is off then new notes are triggered
(which sounds quite different). These settings
make a big difference to how it feels to play
the instrument, so experiment to see what
suits you.
We have made this work with Gtak so that
when you slide and bend, generated harmony
notes are shifted by the same amount as the
note that generated them.
6.7 Arpeggiator Instruments
We have not modified the Arpeggiator script
because it got too confusing! However we have
set all the instruments that use the script to
have pitchbend quantized, and triggering new
notes. This means that bends will not be
smooth, but slides and hammer ons/pull offs
will work as expected.
Mono mode opens up a lot of new playing
techniques. For instance, if you load the lead
synth shown above (Android Cabinet Lead
or any other instrument with similar settings),
strumming a chord will sound like a fast
arpeggio. Then damping the strings in reverse
order of the strum will sound an arpeggio
played the other way. Or try letting a low note
ring and then playing a melody, in between
the melody notes the low note will be
If you change the pitchbend settings on
instruments that use the arpeggiator script
strange things will happen!
Instruments that feature the arpeggiator are in
the Synth/6 – Arpeggiator section.
There are also instruments that have a
polyphonic sequencer which we have set up in
the same way. These are in the Synth/6 –
Sequencer section.
Note: many instruments in the World
collection (eg flutes) are set to play
monophonically using the
Unisono/Portamento script. However in these
instruments it does not have a performance
view. If you want to turn off monophonic
playing you can do it from the Instrument
panel by turning off (the confusingly named)
legato mode.
6.8 Micro Tuned Instruments
All the instruments in the World collection
(except percussion) have a Tuning panel where
you can set up a tuning offset for each note in
the scale. This gives added realism for
instruments that are not tuned to an equal
temperament scale (the standard in modern
western music).
There is also a section for Portamento which
glides from one note to another. This is very
important to certain lead synth sounds. If you
want predictable results it is important to play
cleanly when using portamento. For instance,
normally you might not notice a brief
accidentally triggered harmonic, but with
portamento on you will hear the effect on the
next note you play!
So, for instance, if you play a Db you will hear
the Db with micro tuning applied. In the
default settings of many of these instruments
the Db will be lower than an equal tempered
Finally the Unisono section lets you thicken up
the sound by playing multiple unison notes
(with detuning and spreading options) for
each one you play. These extra notes will
follow the pitchbend of the original note.
It is very important to set the Key in the
Tuning panel to match your song, otherwise
the instrument will just sound badly tuned!
However, there is a problem. If you play a C
and then hammer on to a Db you will hear the
micro tuned C raised by an equal tempered
In monophonic mode the first note after
loading does not play. This is unavoidable.
semitone – which is not the same thing!
7 The Config panel
You can get around this by setting pitchbend
to trigger a new note, but then bends will not
sound smooth.
You can make various configuration settings
in the Config panel. Click the Config Panel
button in the lower right hand corner to
switch between the main panel and the config
We could not think of a way to get bends and
hammer ons to work correctly at the same
time, so we chose to make bends correct. If
you would prefer hammer ons to give correct
micro tuned notes then set pitchbend to
trigger new notes in the Gtak panel.
The following sections describe the various
7.1 CC blocking
6.9 Getting the most out of Kontakt
If you can not get quite the sound you want,
first try clicking on the Instrument panel. This
contains the most important instrument
For more extensive editing, click the wrench
icon to reveal the instrument editor. You can
change almost anything there, from source
samples and filters and modulators through to
insert and master effects.
MIDI Continuous Controllers (CCs) are very
useful for controlling Kontatk3 instruments.
However, when a Guitar to MIDI converter is
controlling multiple instruments often you do
not want a CC to control all the instruments at
the same time. In this case, you can use Gtak's
CC blocking function.
For instance, by default Kontakt3 library
instruments have CC7 set to control volume
(and CC11 pan position). If you have several
instruments you probably don't want to
change the volume of them all together.
There are four modes for CC blocking:
1) Muted: CCs are blocked whenever the
instrument is muted, either by its pedal or
by another pedal in the mute range.
2) Always: CCs are always blocked
3) Never: CCs are never blocked
4) Smart: CCs are blocked when the
instrument is muted, and also when a note
arrives and is not played for a reason like
the string not being enabled (the example
below should make this clearer!). This
mode is useful when using string enables or
fret or pick filters.
For example, if you have set the wheel
controller on your MIDI pickup (or an
expression pedal) to send CC7 (volume) and
you are using another pedal to switch between
two instruments using Pedal Mutes... you
should select CCBlock:Muted in both
instruments. The controller will then change
the volume of whichever instrument is not
currently muted.
7.2.1 Transpose presets
There is also a preset system for transpose
settings of the 6 strings.
Note: You must move the controller to the
current value of the volume before the
volume will start changing.
There are various preset tunings you can
choose (they all assume your guitar is in
Alternatively, if you are using two instruments
with one assigned to strings 1 to 4 and the
other instrument to strings 5 and 6, then you
should set CCBlock:Smart in both instruments.
Playing a note on strings 1 – 4 will then make
the controller control the first instrument's
volume. Playing a note on strings 5 or 6 will
make it control the second instrument.
standard tuning). There are also four slots for
storing your own user tunings.
MIDI CCs can also be set to control almost
anything in a Kontakt3 instrument by
setting MIDI CC as an external source for
modulation (see the Kontakt3 documentation
for more information). Gtak's CC blocking is
useful for these too.
Note that the user tunings are saved with the
instrument (or script if you save it), and are
not shared between instruments. This the
best we could do within the constraints of the
KSP script system.
If you want to use the settings from one
instrument in a second instrument you can
save Gtak and then load it in the second
instrument using the procedure described in
Section 8.
7.2 Transposition
The transposition section in the Config Panel
lets you transpose each string individually and
also all strings at once.
7.3 Open string settings
If your guitar is tuned to a non-standard
tuning and you want to use the fret filter, you
need to set the open string notes in the Config
panel. This is so that Gtak knows which note
corresponds to which fret.
If you are using a bass you can download a
custom version of Gtak with the open strings
set already, see Section 18.
For instance, if you set Transp.6: -2 the 6th
string will be transposed down 2 semitones
and a guitar in standard tuning will play as if it
were in drop D tuning.
If you set Transp.All: -12 the guitar will play
as if all the strings were tuned down an octave.
If you set Transp.All: -12 and Transp.6: -2
the guitar will play as if you had tuned it down
an octave and dropped the E another tone
to D.
To set the open string notes:
1) click Learn to turn on learning
2) play the open strings on your guitar until all
the open string notes have been recognised
3) click Learn again to turn off learning
Click Reset to set the notes back to standard
guitar tuning.
7.4 Base channel
7.9 Sustain 1 note/string
Base Ch sets the lowest MIDI channel the
Sust 1 note/string controls how notes are
guitar to MIDI converter sends on. It should
be set the same as in your guitar midi
sustained when the pedal is set to sustain
When Sust 1 note/string is on, only one
note per string is sustained, so playing a new
note on a string stops any previous note
played on that string.
7.5 Strings
Strings sets the number of strings that your
instrument has. It affects the number of string
enable buttons shown and the number of
MIDI channels used to receive on.
When it Sust 1 note/string off, all notes
played are sustained until the pedal is
7.6 Pitchbend range
7.10 Allow other MIDI channels
PB Range tells Gtak what the maximum value
7.7 Pick Control settings
When AllowOtherMIDICh is set Gtak plays
notes on MIDI channels that do not
correspond to strings. This is useful, for
instance, if you want a keyboard to also
control the instrument. In this case you would
set the keyboard to send on a channel that is
not used by your Guitar to MIDI conveter.
Pick Control only works with Axon Guitar to
MIDI converters. There are three modes for
For example if Base Ch=1 and Strings=6 and
AllowOtherMIDICh is off, then notes on
channels 7->16 will not be played.
of pitchbend means in terms of semitones. It
must be set to the same value as your guitar to
MIDI converter.
Off: turns pick control off and hides all the
controls related to it. Set this if you don't
have an Axon or don't want to use pick
On: allows the use of the pick filter.
ToMod: maps pick control to the Modwheel
(CC1). This is useful beacuase the modwheel
is already set to control important
parameters in many instruments.
You also need to set your Axon to send pick
control as a CC (see section 3.4.1). The Pick
CC control must be set to the same CC number
as you set in the Axon.
7.8 New note velocity
NewNoteV sets the scaling of the velocity of new
notes when pitchbend is set to trigger new
notes. For instance, when it is set to 100% the
new notes are played at the same velocity as
the original note.
We have had to alter many of the scripts in the
Kontakt3 library to get them to work with
Gtak. So, if you already have modified versions
of library instruments that you would like to
use with Gtak, you will also need to replace
any altered scripts to get it to work. Altered
scripts have been renamed by adding (Gtak)
after their names. Save these altered scripts in
the same way we saved Gtak above.
8 Using Gtak with other
You can load Gtak into other Kontakt3
instruments you buy or create. Before you can
do this you have to save Gtak as a preset. To
do this:
1) Load any instrument containing Gtak
2) Make any settings you want in Gtak (the
settings will be saved with the preset)
Note: because of the strange behaviour of the
KSP scripting system, it is possible that Gtak
will not work with scripts in third party
instruments. If you have problems contact us
and we will see what we can do.
3) Click the Wrench icon to open the
instrument editor
4) Click the Script Editor button to open the
script editor (unless it is already open)
5) Click the Gtak tab
6) Click Preset and select save preset...
7) Then choose a name and save (use the
default folder)
You can then load this preset into another
instrument. First load up the new instrument,
1) Click the Wrench icon to open the
instrument editor
2) Click the Script Editor button to open the
script editor (unless it is already open)
3) Click the first script slot tab
4) Click Preset, then user and select the Gtak
preset you saved before
If you have settings you use often, you can
save copies of Gtak with those settings preset
for loading later.
9.3 Configuring Quick-load menus
9 Setting up Kontakt
The following settings can make working with
Gtak easier.
It is much easier to load Gtak instruments if
they are in the Quick-load menu. To get the
Gtak instruments into the Quick-load menu:
9.1 Setting the default multi
1) If the File Browser is hidden, click the
folder icon to open it.
To set the Gtak multi to be the default multi:
1) Load the Gtak multi as described earlier.
2) In the File menu, select save as default
2) Select the Database tab and click
Rebuild DB.
From now on the gtak multi will load when
you load Kontakt3.
3) Make sure Multis and Instruments are
selected in the formats. Also make sure that
the Locations being scanned include your
Kontakt3 library. If it does not, then click
Edit Locations... (see Kontakt manual
for more details)
9.2 Setting MIDI Omni
To set MIDI omni as the default for newly
loaded instruments:
1) Click on the cog icon to open the Main
2) Click on the Handling tab
3) For MIDI channel assignment for loaded
patches, select assign to omni.
4) Click Rebuild
5) When the rebuild has finished, click the
Quick Load tab and then below it click the
Instr tab.
6) Click the Kontakt3 Library's + to expand it.
You should see the Gtak folder as shown
10 Custom Gtak downloads
Unfortunately, there is no central location
where you can make changes to settings in the
KSP scripting system. This means that if you
want to use a pitchbend range of 24 you would
have to go through each of the 1000
instruments in the library, change the
pitchbend range and save the instrument. Or
you could change the range each time you
loaded an instrument, but that would be very
To save you having to do this we have made
available custom Gtak downloads with various
different settings for things like pitchbend
range. Just go to the download page, login,
and click to go to the custom downloads page.
The form will look something like this:
7) If you want only the Gtak instruments to
appear in the Quick-load menu, just check
the checkbox by Gtak.
If you want the standard instrument and
the Gtak instruments, check the checkbox
next to Kontakt3 Library (Gtak will also be
included because it is under the Kontakt3
Now the Gtak instruments should appear
when you open the File menu and select new
instrument from list, and also when you
click the icon to the left of an instrument's
name in the rack as shown below.
Make your selections then click download.
Finally, install the files as described in section
If the custom option you need is not there,
contact us and we will see what we can do.
11 Troubleshooting
Here are some ideas if things aren't working:
Visit the Gtak forum at to
see if anyone else has had similar problems.
Check that MIDI data is reaching Kontakt3 by
observing the MIDI connector icon next to the
MIDI Ch: field in the Instrument header - it
flickers when MIDI data is received.
If there are problems try strumming some
chords for a while, sometimes Gtak can
diagnose the problem. If it can it will print a
message in the status field (to the left of the
Config panel button).
If MIDI seems OK but the instrument's level
meters are not moving, then check that the
instrument's volume is not turned down.
Sometimes things can send CC7=0 when you
are not expecting it.
If the instrument's meters are moving, but you
can't hear anything, there is probably some
problem between Kontakt3 and your
If slides, bends and hammer ons don't seem to
be reaching the right notes, then check the
pitchbend range is set correctly.
If normally played notes sometimes sound out
of tune, again check the pitchbend range.
If you get messages about missing samples
when loading Gtak instruments, make sure
Gtak is installed in the correct directory and
the Kontakt3 library is also installed correctly.
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