Spatial audio glossary

Bed
The fixed background layer of an immersive mix, such as a room or ambience. Beds sit in set channels. Objects move freely on top of them.
Binaural
A headphone version of a mix that keeps the 3D effect on any normal headphones. It copies how your two ears hear sound from different directions.
Dolby Atmos
A well-known immersive audio format used in cinemas, streaming and music. Spatial9 can convert Atmos mixes into other formats, such as Eclipsa Audio.
Download
Saving a file from Spatial9 onto your device.
Eclipsa Audio
An open immersive audio format, supported by YouTube and Google. It is built on IAMF, an open standard.
Headphones
The best way to hear spatial audio, because each ear gets its own sound. Any headphones or earbuds work. Use both sides for the effect to work.
High contrast
A theme with black, white and yellow and thicker outlines, so edges and buttons are easy to find.
HRTF
Short for "head-related transfer function": a description of how your head and ears change sound from each direction. Binaural audio uses it to trick your brain into hearing direction.
IAMF
An open file format for immersive audio. Eclipsa Audio is based on it.
Immersive audio
Sound that seems to come from all around you, including above, not only left and right. Also called spatial audio or 3D audio.
Learning preferences
Your settings for how Learn Your Way pages look and behave. Theme, text size, spacing, motion and more. Saved on your device, or to your account if you sign in.
Loudness
How loud a song feels overall, measured in LUFS. Streaming services turn songs up or down to a target loudness.
Mix
The finished balance of all the parts of a song: how loud each one is and where it sits.
Mono
Sound with a single channel. Both ears hear exactly the same thing.
Niner
The Spatial9 assistant. In Learning Mode, Niner answers in short, plain steps. Niner cannot see your screen or change your projects.
Object
One sound in an immersive mix that has its own position, such as a voice or a guitar. Objects can move over time.
Panning
Moving a sound between left and right. Spatial audio goes further and also places sounds in front, behind and above.
Preset
A ready-made group of settings you can apply in one go. For example "Quiet and focused".
Project
One song or video you are working on in Spatial9, saved to your account.
Read aloud
A button that reads a guide step out loud using your device voice. It never starts on its own. "Stop sound" always stops it.
Reduce motion
A setting that stops animations and moving effects.
Render
The moment Spatial9 builds the final audio or video file from your project. Failed renders are not counted against your limit.
Spatial audio
Another name for immersive audio: sound placed in 3D space around the listener.
Stem separation
Splitting a finished song into its stems automatically.
Stems
The separate parts of a song, such as vocals, drums, bass and other instruments.
Stereo
Normal two-channel sound: one left, one right. Most songs you hear are stereo.
Upload
Sending a file from your device to Spatial9.
Workspace
The page that lists all your Spatial9 projects.
YouTube-ready video
A video file prepared so YouTube can play its immersive sound.