SBND

AI Stem Mixer & Masterer

✨ Professional 9-Stage DSP Chain β€’ Local RAM Processing β€’ 100% Private & Secure

🎡 Drag & Drop your Stem Audio files here Supports WAV, MP3, M4A (Auto-converted to PCM for sample-accurate sync)

⚑ AI Audio Mastering Configuration

❓ Frequently Asked Questions

How does the 9-Stage DSP Sequential Mastering work? β–Ό

The engine executes nine distinct DSP phases: (1) Stems Decoding & PCM Buffer Sync, (2) Smart Stem Auto-Leveling & Dynamic Balance, (3) Individual Stem Dynamic Compression (-18dB, 4:1), (4) Drum & Bass Smart Frequency Cuts, (5) Vocal Warmth, Low Cut & Tempo-Synced Subtle Reverb/Delay, (6) Master Parametric & Dynamic EQ, (7) Harmonic Exciter & Saturation, (8) Mid-Side Processing & Punchy Peak Limiter, and (9) High-Precision PCM WAV Rendering.

Why does MP3 and WAV behave identically for timeline seeking? β–Ό

Our engine automatically pre-decodes any uploaded audio file (MP3, M4A, WAV) into uncompressed linear PCM AudioBuffers upon import, generating a clean synchronized PCM waveform. This completely removes MP3 decoder latency and guarantees sample-accurate multi-track seeking on both desktop and mobile devices.

What is Mid-Side Processing & Stereo Imaging? β–Ό

Mid-Side (M/S) processing splits the stereo signal into Center (Mid - Vocals, Bass, Kick) and Sides (Stereo Width - Synths, Guitars, Reverb). This separates competing frequencies, preventing instrument masking and boosting overall clarity.

Are my stems saved on any server? β–Ό

No. The application operates in a completely stateless architecture. Your audio files never leave your browser window and are cleared automatically when you refresh or close the page.