Phase 4: Audio & Music Generation · 50 min · Python · Demucs · pydub

Audio Generation Engineering

Stem separation, structure control, voice cloning — the engineering layer that turns raw generation into production audio.

Real-world application: Audio engineering skills (stem separation, structure control, format handling) demonstrate you can work with audio as an engineer, not just generate it.

What you will learn

Differentiate text-to-audio (SFX) vs text-to-music (full songs)
Handle audio formats: WAV, MP3, FLAC, sample rates (44.1kHz, 48kHz), bit depth
Implement stem separation: splitting generated audio into individual instrument tracks (Demucs, Moises)
Control music structure: intro/verse/chorus/outro, mood prompts, tempo control

Objective

Generate listening samples and evaluate them for structure, fidelity, editability, and intended use. In the paired studio lab, generate a song with Suno or load an existing audio file, then use Demucs to separate it into stems (vocals, drums, bass, other). Save each stem as a separate file and create a modified mix by adjusting stem volumes.

The Problem

A team generates a song with Suno. The song sounds good, but:

They need to remove the vocals and keep only the instrumental — they don't know about stem separation
They need the audio in 48kHz WAV for a video project, but Suno outputs 44.1kHz MP3 — they don't know how to convert
They need the song to have a specific structure (intro → verse → chorus) — they don't know how to control structure
They need to clone a specific voice for the vocals — they don't know voice cloning

Audio engineering skills (stem separation, structure control, format handling) demonstrate you can work with audio as an engineer, not just generate it.

What you'll build
Implement stem separation with Demucs to split generated audio into individual instrument tracks. Handle audio format conversion (WAV, MP3, FLAC, sample rates). Control music structure with prompt engineering. Document audio engineering best practices.

Unlock the full lesson

You've read the first 2 sections. The rest of this lesson covers The Concept, Build, Check Yourself, Key Terms & Next — plus a hands-on lab, quiz, and project artifact.

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