AI Stem Splitter — 9-Stem Separation
Extract lead vocals, backing vocals, kick, snare, hi-hat, bass, piano, guitar and synths
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How to Split Any Song Into 9 Stems
RemoveVocals Stem Splitter uses a hybrid AI + DSP pipeline for 9-stem separation. First, our MDX-Net neural network isolates vocals from the instrumental. Mid/side stereo extraction then separates lead vocals (center) from backing vocals (sides). The instrumental undergoes HPSS (Harmonic-Percussive Source Separation) with median filtering to split drums from harmonic content. Sub-drum spectral splitting isolates kick (<150 Hz), snare (150 Hz-2 kHz), and hi-hat (>5 kHz). A spectral crossover at 250 Hz isolates bass, while spectral centroid analysis separates piano, guitar, and remaining synths/instruments.
Processing runs on Web Workers for maximum speed — your main thread stays responsive throughout. The AI model is cached locally after first download for instant re-use. After splitting, transpose any stem, fine-tune the EQ, or run stems through AI Mastering.
Everything runs 100% in your browser. No uploads, no signup, no limits.
Frequently Asked Questions
What is a stem splitter?
A stem splitter separates a mixed audio track into individual components. RemoveVocals extracts 9 stems using AI neural networks combined with HPSS, mid/side extraction, and spectral analysis.
How many stems can I extract?
9 stems: lead vocals, backing vocals, kick, snare, hi-hat, bass, piano/keys, guitar, and synths/other.
Is it free?
Yes, completely free. No signup, no watermarks, no limits. All processing runs in your browser using Web Workers.
How does 9-stem separation work?
AI separates vocals from instrumentals. Mid/side extraction splits lead and backing vocals. HPSS separates drums from harmonic content. Spectral splitting isolates kick, snare, hi-hat, bass, piano, guitar, and synths.
What is HPSS?
Harmonic-Percussive Source Separation uses median filtering on the spectrogram to separate transient percussive content (drums) from sustained harmonic content (instruments).