Audio Source Separation
RASESSeparation · Spatial audio
One song, split into six stems —
placed back around the listener.
Why RASES
To use separation in a service,
it has to be real-time.
- 01
Waiting time
Typical separation processes the whole song first. Tens of seconds of waiting can’t fit into streaming or OTT playback.
- 02
Runs locally
Typical separation sends the song to a server and downloads it back. Without internet, it doesn’t work.
- 03
Immersive demand
Earbuds and soundbars grew demand for spatial audio, but running separation and spatializing apart adds delay.
- 04
Device limits
Models of hundreds of MB and GB-level peak memory aren’t realistic on mobile, set-top or embedded.
RASES is the answer.
Separation and spatial audio
in one real-time pipeline.
Split → 3D spatialize → output, per streaming buffer block, in under 0.5 s.
Playback never stops — it works while the song downloads.
Raon Audio Source sEparation & Spatial sound
What is RASES
An engine that splits
and places sound.
RASES splits stereo audio into instrument and vocal objects in real time,
then gives each one its own place in space.
It all runs on the phone — no server, no internet.
- 6stemsVocals · Guitar · Bass · Drums · Piano · Other
- Real-timeSplit and spatialized as it plays
- On-deviceNo server, no internet
Sound Position
Each stem, its own
level and place.
Change the volume and position of every stem.
Drag a dot to move it, use the bars to set its level.
Stem volume
Listening space, top view
Visual demo — no audio.
Use Cases
Keep the parts you want.
Mute the rest.
Keep only what you want to hear, or remove what you don’t.
One song is enough to practice or to enjoy.
- 01Instrument practiceSolo the guitar to learn it, then mute it and play along with the band. Same for drums, bass and piano.
- 02Vocal practiceRemove the vocals and any song becomes a backing track. Your phone is the practice room.
- 03Spatial listeningDrums behind, piano to the side, vocals up front. Any song sounds like a live venue.
RASES AppNovember 2026
Try it in the app first.
Android launches on Google Play and major Chinese stores (Xiaomi · OPPO · Tencent · Baidu). iOS follows.
For businesses, we supply the same tech in the form you need.
Streaming Pipeline
No waiting
for the full file.
As audio downloads, each buffer block is split and spatialized on arrival.
Less waiting — even for large movie files.
- 01Receive blockFrom the very first streamed block
- 02Real-time splitEach block into 6 stems
- 03SpatializeEach stem gets a place in 3D
- 04Play nowOn headphones or speakers
Listening
Any setup, right in place.
- Headphones
Presence and space
On earphones or headphones, sound sits outside your head — right where it belongs.
- Speakers
Wider surround
On speakers, each stem keeps its place for a wider surround effect.
Where It Works
Wherever you stream.
Music streaming3D audio in genie music player
OTT streamingSpatial audio for films and series
Media devicesTV · Phone · Speaker · Earphones
Integration
Fits the way you build.
Runs on the device or on your server,
with technical support for integration.
- 01App SW Plug-inA plug-in for music and video streaming apps
- 02HW Firmware LibraryOn-device in TVs, phones, speakers and earphones
- 03Server LibraryA library for your existing streaming server
Custom development available
Specifications
RASES at a glance.
- Input
- Stereo (2ch) · streaming or file
- Stems
- Vocals, guitar, bass, drums, piano, other — 6
- Processing
- Real-time split and spatialization per buffer block
- Runs on
- On-device — no internet or server costs. Server library also available
- Controls
- Per-stem volume · 3D position, EQ · reverb
- Playback
- Earphones · headphones, stereo · multichannel speakers
- Fields
- Music streaming, OTT, media devices
- Delivery
- App SW plug-in, HW firmware · server library
Custom development available
Let’s build
your sound.
We co-develop immersive audio tailored to your product and platform.
Choose a product to get in touch.