AuDimix is a Windows app from Global Delight that splits a finished song into its separate parts. Users can hear, adjust and save vocals, drums, bass, piano and the remaining instruments on their own. It is for singers, musicians, DJs and producers who want karaoke versions, backing tracks, a cappellas or material for remixes. AuDimix is distributed through the Microsoft Store and offers a free trial with the full feature set.
Five-stem separation
A mixed recording stores every instrument and voice in the same stereo signal. Users therefore cannot simply switch off a vocal the way they can a track in a multitrack project. AuDimix uses AI models trained on a large set of songs to recognize each source and pull it out into its own stem.
AuDimix produces up to five stems from one song:
- Vocals – the lead and sung parts
- Drums – the kit and percussion
- Bass – the bass line
- Piano – keyboard parts
- Backing instruments – everything else, such as guitars, strings and pads
This goes further than a basic two-way split into vocals and instrumental. Drums, bass and piano each get their own stem. A user can therefore remove only the part they want to replace or study while keeping the rest of the arrangement intact.
Loading a song
Users import a track into AuDimix from the PC. AuDimix accepts common audio formats including MP3, WAV, M4A and FLAC. Users can therefore use music from a downloaded library or a lossless rip without converting it first.
Live preview while extracting
AuDimix plays the stems while separation is still running. The user can listen to each extracted part as it appears, without waiting for the whole process to finish. This lets them judge whether the split suits the intended use.
Stem mixer controls
After separation, every stem has its own volume slider. Lowering the vocal stem slightly leaves a guide voice for practice, while dropping it completely gives a karaoke track. Users can also mute any stem completely or isolate it on its own.
These controls make it practical to build different versions of the same song in AuDimix:
- an instrumental for singing along, with the vocal stem muted
- an a cappella, with only the vocal stem left on
- a practice track with the user’s own instrument, such as bass or drums, removed
- isolated drum or bass parts to sample or loop in a remix
Pitch and tempo changes
AuDimix can also change a track’s pitch and tempo. Shifting the pitch moves the song into a key that fits a singer’s range. Slowing the tempo helps a musician work through a difficult passage before playing it at full speed. Both adjustments apply alongside the stem mix. A practice version can therefore be slower, transposed and missing one instrument at the same time.
Exporting results
When the balance sounds right, AuDimix offers two ways to save the work. Users can export the separated stems and then bring them into a digital audio workstation for further editing or share them directly. Users can also export the adjusted mix as a single high-quality audio file and save it to the PC. The second option is the quicker route to a finished karaoke track or backing track that plays in any media player.
