Sound Trajectory 2 allows you to master 3D audio in a creative way

From stereo to any multichannel setup

Surround | Dolby Atmos | Ambisonics | and much more

Sound Trajectory is an app which extends existing solutions like DAWs, modular softwares, live mixing and game frameworks. It can work with a lot of voices and loudspeakers for music studios, live concerts, cinemas, domes, VR and Binaural audio. It merges the best of studio sound techniques and audio game frameworks.


Manage the positions of your sound sources by drawing their path in a 3D space.

Motion Listener

The listener can track a trajectory or move freely according to natural or extravagant movements!


The sampler plays the audio samples along the trajectories.



From mono to 16 channels, a dedicated editor allows you to define the pattern of the sources. During the mixing, Sound Trajectory allows you to shape them in 3D: position, size, rotation, scale.

Speakers editor

The speaker configuration is unlimited in number and position thanks to a clear, easy-to-use editing interface


Visualize video on virtual screen from  integrated player or  Syphon, Spout or digitizers for all formats from standard, up to VR 360.

Osc & midi

Use the OSC protocol as input and output in order to control Sound Trajectory from another software or conversely in order to control other softwares from Sound Trajectory. Use the Midi protocol with 14 bit pitchbend in order to control the trajectories index.

Vst & ambisonic

Sound Trajectory comprises an auxiliary output for the processing of ambisonic sources with vst plugins. This auxiliary bus can be configured in ambisonic format up to the 3rd order in ambiX.


A session can have as many scenes as you want. Each scene allows you to instantly store and recall all the parameters that you have edited or modified: trajectories, samples, position of the listener, etc…

Sound Trajectory 2



ST 2.0 EDU


for student or indie

ST 2.0 upgrade


from Sound Trajectory 1.x

source code


under GPL/v3

New features in Sound Trajectory version 2

Flexible tracks

Several new track types for a better perception of the diffused sounds.


  • Ambisonic mix,
  • Dbap mix,
  • Ambisonics HOA input,
  • direct output with pitchshifting and delays.


Complete ADM OSC support with Dolby Atmos, Nuendo, L-isa and Spat revolution. Ready for an easier mixing experience on stage or in the studio.

Trajectories collection 

Include a complete collection of pre-built trajectories, ready to be used when the timing is tight.


Multidelay tracks for a multitude of time-based effects with transposition for each voice (up to 64). Each voice is distributed along the trajectory of your choice.

Interactive mapping

The interactive panel has been updated to allow the creation of robust automatic mixing rules and other interactive features such as fast midi mapping and other functionality.


Input and Output matrix for arrays of microphones, multi speaker diffusion and all kind of various things

Direct out tracks

This type of track is dedicated to diffusion on free loudspeaker configurations.

Let your creativity blossom !

Draw trajectories, move the sound (or yourself) and feel the space.

Designed for sound people in studios, on stages or in music, video, cinema and VR installations

masteR audio space


Learn Sound Trajectory and  writing of sound spatialization at the MAS/LMA research center in Marseille / France.   In one week, you will experience all aspects of the Sound Trajectory on a 24-voice 3D ambisonic device.