Spatial Audio:
Ambisonics:
Reading:
Zotter, Franz, Frank, Matthias, Ambisonics: a Practical 3D Audio Theory for Recording, 2019 FREE PDF
Natasha Barrett's research articles

Ambisonic Plugins:
Ambisonic Toolkit for Reaper (Free)
Blue Ripple Higher Order Plugins (Free)
Matthias Kronlachner Ambix Plugins (Free)
​IEM Plugins 7th Order Plugins (Free)
Harpex 3D surround sound formats
IRCAM Spat

Online Tutorials:
​Trond Lossius Ambisonic Workflow using ATK Check out more of his videos 

Spatial Audio Workflows:
Spatial Audio: Poetics and Workflows: Interview with composer Pierre Alexandre Tremblay, University of Huddersfield. 
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