From Stereo to HOA7: A Step-by-Step Session
Institute for Computer Music and Sound Technology (ICST) Zurich University of the Arts
From Stereo to HOA7: A Step-by-Step Session
For whom: Level: Intermediate | Audience: Composer, Producer.
Why this guide exists
Many users know stereo production well but need a concrete bridge to higher-order Ambisonics in a real session.
Learning goal
Translate a stereo-style arrangement into HOA7 workflow thinking: object placement, motion, and controlled rendering.
Prerequisites
- Basic stereo mixing workflow.
- Basic Reaper project setup skills.
- ICST plugin installation complete.
Step 1 - Map stereo roles to spatial roles
Assign your stereo elements to spatial objects:
- Lead elements -> stable front or animated object.
- Support elements -> wider spatial beds.
- Atmospheres -> diffuse or layered height support.
Step 2 - Build the HOA7 session scaffold
Create source tracks, assign AmbiEncoder instances, and define a clean HOA7 bus path.
Step 3 - Start with static placement
Set clear initial positions before adding motion.
Step 4 - Add controlled movement
Use small, intentional automation moves and test readability in monitoring.
Step 5 - Validate translation
Check mono/stereo compatibility references and verify the HOA7 output chain.
Step 6 - Export and archive
Export your Ambisonics render and save project notes for reproducibility.
Common pitfalls
- Over-animating too early.
- Ignoring gain staging on higher-order buses.
- Missing documentation of routing and OSC assignments.