How Online Audio Mastering Works — Complete Guide
Learn everything about automatic audio mastering: what mastering is, why you need it, how AI genre detection works, LUFS normalization for streaming platforms, spatial audio enhancement, and how to prepare your mix for the best results.
What Is Audio Mastering?
Audio mastering is the final step in music production before distribution. It ensures your track sounds polished, balanced, and loud enough to compete with commercially released music on streaming platforms like Spotify, Apple Music, and YouTube. Traditional mastering requires an experienced engineer — LOUDCRAFT automates this process using AI analysis.
Mixing vs Mastering — What's the Difference?
Mixing balances individual tracks (vocals, drums, instruments) within a song. Mastering optimizes the final stereo mix for loudness, tonal balance, stereo image, and platform-specific requirements. Mastering is applied after mixing.
LUFS Normalization for Streaming
Streaming platforms normalize loudness to prevent volume jumps between songs. Spotify targets -14 LUFS, Apple Music targets -16 LUFS. LOUDCRAFT automatically normalizes your master to the correct level for your chosen platform, with true peak limiting at -1 dBTP.
AI Genre Detection
LOUDCRAFT uses an ONNX neural network that analyzes the mel spectrogram of your audio to classify it into genres. Each genre has optimized processing profiles — Hip-Hop gets enhanced low-end, Pop gets brighter presence, Classical preserves dynamics.
Immersive Spatial Engine
Unlike simple stereo wideners, LOUDCRAFT's 8-stage spatial engine uses Mid/Side processing, Haas effect, and frequency-dependent widening while monitoring stereo correlation to prevent mono-compatibility issues. Adjustable from 0-100% intensity.
10-Point Quality Gate
Every master passes automated quality control: integrated loudness, true peak, stereo correlation, spectral balance, dynamic range, clipping detection, phase coherence, and frequency content checks.
How to Prepare Your Mix for Mastering
Leave 3-6 dB of headroom (peak around -6 to -3 dBFS). Remove any limiting or maximizing on the master bus. Export at the highest quality available (WAV or FLAC, 24-bit or higher). Don't clip the output.