Audio Tools Blog

Expert guides, tutorials, and tips on audio formats, conversion, metadata editing, and audio processing. Learn how to get the most out of your audio files.

📅 Jan 9, 2026 ⏱️ 15 min read

Refactoring Browser Audio Tools: Web Audio API + FFmpeg Dual-Processing Architecture

A comprehensive technical guide to refactoring browser-based audio processing tools from FFmpeg-only architecture to a dual-processing system.

Web Audio API FFmpeg Technical
📅 Dec 26, 2025 ⏱️ 10 min read

How to Convert M4A to MP3 (iPhone Audio to MP3)

Complete guide to converting M4A files to MP3 format. Learn why iPhone uses M4A, how to convert voice memos and recordings to MP3 for universal compatibility, and the best free conversion methods.

M4A MP3 Conversion Tutorial
📅 Dec 26, 2025 ⏱️ 9 min read

Daycore: The Opposite of Nightcore (Slowed + Pitched Down Music)

The opposite of nightcore is daycore (also called nightcore reverse or anti-nightcore). Learn how daycore's slowed tempo (-25%) and lowered pitch (-3 semitones) create emotional, melancholic audio for sad edits, TikTok videos, and anime AMVs.

Daycore Nightcore Reverse Anti-Nightcore Audio Effects Tutorial
📅 Dec 11, 2025 ⏱️ 8 min read

Building an Audio File Cutter with Real-Time Preview Player

Technical deep-dive into adding instant preview playback to our audio trimmer. Learn how Web Audio API and FFmpeg.wasm work together to create seamless UX with waveform visualization, loop mode, playback speed control, and keyboard shortcuts.

WebAssembly FFmpeg Technical Tutorial
📅 Dec 9, 2025 ⏱️ 5 min read

How to Add Cover Art to FLAC Files: Complete Guide

Learn how to embed album artwork into your FLAC files for perfect music library organization. We cover desktop tools, browser-based options, and best practices for image formats and sizes.

FLAC Metadata Tutorial
📅 Dec 8, 2025 ⏱️ 7 min read

MP3 vs FLAC vs WAV: Which Audio Format Should You Use?

A comprehensive comparison of the three most popular audio formats. We break down quality, file size, compatibility, and use cases to help you choose the right format for your needs.

Audio Formats Comparison Guide
📅 Dec 7, 2025 ⏱️ 8 min read

Building Browser-Based Audio Tools with FFmpeg.wasm

A technical deep-dive into building client-side audio processing tools using FFmpeg.wasm. Learn about lazy loading strategies, memory management, and performance optimization.

WebAssembly FFmpeg Technical