Audacity

Overview

Audacity was started in 1999 by Dominic Mazzoni and Roger Dannenberg at Carnegie Mellon University as an academic project for audio analysis research, and was released as free software soon after. It has since become one of the most widely used cross-platform audio editors, with a large plugin ecosystem and support for the majority of common audio formats through the bundled FFmpeg and LAME libraries.

Development has continued under a series of maintainers, most recently the Audacity team backed by Muse Group, which acquired the trademark and led development from 2021 onward. A community fork, Tenacity, emerged during this period in response to concerns over proposed telemetry and licensing changes; Audacity itself remains licensed under the GPL and has continued regular releases.

Key Features

• Multi-track recording and editing — Record from multiple inputs and edit an unlimited number of tracks
• Noise reduction and restoration — Built-in noise reduction, click removal, and other cleanup effects
• Spectrogram view — Visual frequency analysis for identifying and isolating specific sounds
• Wide format support — Import and export WAV, MP3, FLAC, OGG, and other formats via bundled codec libraries
• Plugin support — Compatible with LADSPA, LV2, VST3, and Audio Unit (macOS) effect plugins
• Macros and batch processing — Automate repeated editing tasks across multiple files

Use Cases

• Podcast and voiceover editing — Recording, cleaning up, and trimming spoken-word audio
• Music editing and mixing — Basic multi-track recording and mixing for musicians and hobbyists
• Audio restoration — Removing hiss, hum, and clicks from old recordings or digitized tapes/vinyl
• Format conversion — Converting between common audio formats using the built-in export options

Who It’s For

Audacity is the default starting point for anyone who needs a free, cross-platform audio editor without a learning curve as steep as a full DAW — students, podcasters, and hobbyist musicians in particular. Its long history and large user base mean extensive documentation and community plugins are readily available for most common editing tasks.