Spatial Audio Basics and the Science of Hearing
New to immersive sound? These guides explain what spatial audio is, how it compares with stereo and binaural audio, and the research on human hearing behind it.
What Is Spatial Audio? The Complete Guide to 3D Sound
Spatial audio places sound all around you, including above. How it works on headphones and speakers, how it differs from stereo, the main formats and how to make your own.
Stereo vs Immersive Sound: What Is the Difference and Which Should You Use?
Stereo plays sound on a line between two speakers. Immersive sound surrounds you, even from above. Compare how they work and when to use each.
8D vs Binaural vs Spatial Audio: What Is the Difference?
Binaural, spatial audio and 8D audio are not the same. Learn what each one is, how they sound on headphones and speakers, and when to use which.
Headphone vs Speaker Spatial Audio: How Each Creates 3D Sound
Spatial audio sounds different on headphones and speakers. How binaural rendering and speaker arrays create direction, what each does well, and how to mix for both.
The History of Immersive Audio: The People, Papers and Ideas Behind 3D Sound
From the 1881 Paris théâtrophone to royalty-free 3D sound on YouTube: a researched history of immersive audio, its inventors, key papers and lessons.
Ambisonics Explained: How a Whole Sphere of Sound Fits in One File
Ambisonics captures sound from every direction as one sphere. Learn how orders, channels and B-format work, and why Eclipsa Audio uses it.
MIT Psychoacoustics Hacks: How MIT Hacked Human Hearing
From the missing fundamental to 40 Hz brain rhythms: 12 MIT psychoacoustics hacks that shaped how we hear, with papers and diagrams.
Hearing It Back: Generative Spatial Audio and the Age of Fully Personal Sound
For a century, every listener got the same mix. Generative Spatial Audio changes that: music rebuilt in 3D around one person, shaped to their ears, their headphones and their hearing. This is the story of giving people their music back.
Spatial Audio, Binaural Beats and Health: What the Science Says, and What the CIA Star Gate Files Really Show
What studies say about music, spatial audio and binaural beats for stress, pain and sleep, plus the declassified CIA Gateway and Star Gate files.
Space Sonification and Spatial Audio: NASA, NAMM and Spatial9
How NASA turns space data into sound, why other planets sound different, and how Spatial9 adds a third dimension, as discussed at NAMM 2026.
Spatial Audio on Headphones vs Phone Speakers: Will Your Mix Survive Both?
Your spatial mix will be heard on earbuds with head tracking and on tiny phone speakers. What each path does to the mix, what to check, and how to prepare one that survives both.
Spatial Audio for Podcasts: Binaural Interviews, Placed Voices and Clear Dialogue
What spatial audio means for podcasts: where it is supported, binaural interviews, placing voices, keeping dialogue clear, Apple's -16 LKFS loudness guidance and mono checks.
One Video, Three Deliverables: Eclipsa Audio for YouTube, Binaural for Phones and an Archive Master
How to turn one video project into three deliverables: a YouTube upload with Eclipsa Audio, a stereo or binaural version for social and phones, and a documented archive master.
Double Spatial Processing: What Happens When You Spatialize Spatial Audio Again
What happens when binaural or already-spatial audio is spatialized again: comb filtering, smeared imaging, stacked reverb and weak centres, plus how to detect and avoid it.
Acoustic Digital Twin vs Reverb: What Is the Difference?
Reverb adds the impression of a space; an acoustic digital twin models the space and how sound reaches a listener. Algorithmic, convolution and simulated acoustics explained, and where each fits.
Moving Camera, Moving Sound: How Audio Should Follow Picture in Immersive Video
How sound should and should not follow camera moves, cuts, POV shots and on-screen action in immersive video: world-locked vs head-locked audio, panning to picture and anchored dialogue.
Planning a 1,000-Track Catalog Conversion to Immersive Audio
How to plan a large immersive catalog conversion: inventory, triage by source material, rights and platform rules, prioritisation, QC sampling, naming, delivery and an honest budget.
Build a Real-Time Spatial Audio Pipeline with Open Source Tools and Spatial9
A complete, open source spatial audio pipeline: MinIO, Apache Kafka, PostgreSQL, FFmpeg, Dagster, FastAPI, Valkey, Prometheus and Grafana, connected to Spatial9 over MCP and A2A, with real-time webhooks, a live preview page and a free docker compose example.
The Ontology of Spatial and Immersive Audio: How Spatial9 Models Sound in 3D
An engineering guide to ontologies for spatial and immersive audio: classes, properties, individuals and axioms, how ADM, IAMF and the Music Ontology fit together, and how Spatial9 uses one shared model from stem separation to agents. Includes Turtle, JSON-LD, SHACL and Python.