2022-03-05 17:31 - Edit on GitHub

The toolbar, located on the top of the editor, contains icons for:


Editing functions

The elements in the left part of the toolbar are for common editing functions:

new sample New sample
Add new samples to the soundfont. A dialog will be displayed for selecting audio files (.wav and .flac files can be imported).
new instrument New instrument
Create a new instrument.
new preset New preset
Create a new preset.
tools Tools
Clicking on this button will show a menu containing all available tools for the selected element(s) in the tree.
undo Undo
Undo the last modification.
redo Redo
Redo the last undone modification.
save Save file
Save the soundfont.

Switch view

In the right part of the toolbar, some icons may appear depending on which editor is displayed:

  • switching between the table table view, the range range editor and the envelope envelope editor is possible when editing an instrument,
  • switching between the table table view and the range range editor is possible when editing a preset,
  • nothing displayed otherwise.


When clicking on the icon recorder, a window opens showing the recorder that can record the output of Polyphone.


The left button can have two possible states:

Start a new record if the acquisition is off. It is possible here to specify the name of the file that will contain the recorded audio signal.
Stop the current acquisition.

The right button can also have two possible states (only accessible if the acquisition is on):

Pause the current acquisition.
Resume the current acquisition.

Virtual keyboard

When clicking on the icon piano, a window opens showing the virtual keyboard that has been made for testing samples, instruments and presets. This window triggers MIDI signals:

  • note on / note off / aftertouch with the piano keyboard,
  • other MIDI signals if the MIDI controller part is expanded.
Virtual keyboard
Virtual keyboard

Piano keyboard

The piano keyboard triggers signals that contains key and velocity numbers. It can be controlled in three ways:

with the mouse
The desired key may be clicked by the mouse. The velocity is defined according to the vertical position of the click. After a click, following moves within the same key will trigger aftertouch signals.
using the computer keyboard
The keys used are defined in the settings.
using an external MIDI keyboard
The MIDI input is defined in the settings. If the piano keyboard is visible, it will show what you are playing.

Markers and colors

  • When an instrument or a preset is selected, the area not covered by the divisions is grayed. It is thus possible to visualize the full range of an instrument or a preset.
  • When a division of an instrument or a preset is selected, its range is displayed the same way than above. Moreover, its root key is identified by an orange marker.
  • When a key is selected on the keyboard, it appears in blue (or the selection color selected in the software settings). Moreover, the range of its corresponding division appears in light blue. This applies only at the instrument level.
  • Middle C (key 60) is identified by a black marker.

Useful shortcuts

This shortcut can put at any time the focus on the virtual keyboard. This allows, while editing in a table for instance, to use the computer to play instead of edit a cell. A glow effect on the virtual keyboard confirms that the focus is on it.
Ctrl+1, Ctrl+2, … Ctrl+8
These shortcuts change the octaves played with the computer keyboard. After the use of Ctrl+1, the lowest octave can be played. The highest octave is reached using Ctrl+8.
The right or left arrow will play the pitch just next or below the last key that has been played, with the same velocity. The association of the key Shift skips keys.
The up or down arrow will play the same pitch than the last key played, but with a stronger or weaker velocity. The association of the key Shift skips velocities.

MIDI controllers

When clicking on the bottom right arrow, the MIDI controller area can be displayed or hidden. If you are playing with modulators, it is advised that you use these features to test your soundfont.

Virtual keyboard with MIDI controllers
Virtual keyboard with MIDI controllers

This area is made of different buttons:

Pitch wheel
The pitch wheel increases or decreases the pitch. It goes back automatically to the original position 0.
The sensitivity defines the modification range in semi-tones of the pitch wheel. By default this is 2 (one full tone).
The pressure is the amount of pressure on the keyboard. It can be compared to the aftertouch but while the aftertouch is key-specific, the pressure is a global signal for all keys.
3 knobs are here so that MIDI controller values can be changed. For each knob you can specify a controller number and then its value.
On / off led
This led is to set a MIDI controller value to 0 or 127 (useful for the sustain pedal for instance). It is like a knob but with only two possible values.
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