That the term essentially didn't exist (1/100 "interest") until Apple rolled it out in Sep 2020 (with some press the summer before).
The general idea of a 3D effect on headphones has been around for decades, often called "3D audio" or similar [1], but I never heard the term "spatial audio" until Apple marketed it.
That the term essentially didn't exist (1/100 "interest") until Apple rolled it out in Sep 2020 (with some press the summer before).
The general idea of a 3D effect on headphones has been around for decades, often called "3D audio" or similar [1], but I never heard the term "spatial audio" until Apple marketed it.
[1] https://en.wikipedia.org/wiki/3D_audio_effect