Vocal Synthesizer

for Mac/Windows ($24,99)  and iPad/iPhone ($7,99)  

A unique vocal synthesizer.

A golden throat at your fingertips.

Jussi emulates male voice vowels in a unique way. Thanks to a set of powerful parameters you can make Jussi sing anything from soft and airy choir-like vowels to hard and angry shouting. Formants are controlled by playing with different velocity, which makes it fun and easy to play using a MIDI keyboard.


Jussi for Mac/Windows


Buy Jussi for Mac/Windows
Try the demo!
(Desktop only)

Fully functional, but with occasional audio disruptions.


Jussi for iPad/iPhone


Buy Jussi for iPad/iPhone



  • ADSR with ”Turn-in” and ”Turn-out” option (Turn-in and Turn-out affects the pitch and maps it to attack and release) Voice character XY pad (Intensity and Narrowness)
  • Legato mode (glides between notes and velocity levels)
  • Legato Hold mode (polyphonic legato when using a sustain controller, consult the documentation for more info) Throat emulation XY pad (Grain and Tonality)
  • Built-in reverb


1 2 3 4
  • 1. ADSR / Turn in & out

    The ADSR controls the volume envelope of a triggered note with an option to slide the pitch (Turn in/out)

  • 2. Character

    Drag the XY pad to alter tone intensity. The ’intense’ axis controls the formant’s Q value and the ’narrow’ axis the formant’s gain value.

  • 3. Three legato modes

    Off: Like an ordinary polysynth. On: Normal legato mode (use XY pad to control). Hold: Smart polyphonic mode (see documentation for full info)

  • 4. Throat

    This XY pad controls grain-factor (Y-axis) and the tonality/noise-factor (X-axis).



PDF version

Demo (Desktop version only)

Fully functional, but occasionally with audio disruption. To unlock the full version, purchase a license and click on the ribbon marked DEMO to enter your serial number. (Yes, this download can be used if you have a license and need to re-install the full version)

Jussi for Mac v 1.0.2

(Unzip and open the included .pkg file to start the installation)

Jussi for Windows v 1.0.2

(Unzip and open the included .exe file to start the installation)

High resolution images

Download zip with hi-res images

Audio examples