Audacity

This article refers to the software product. For the word, please see on our sister site, Wiktionary.

Audacity is a free, cross platform digital audio editor. The source code for Audacity is released under the GNU General Public License. The graphical user interface for the editor has been produced using the wxWidgets library.

Audacity is extremely popular in the podcasting world due to its wide availability, multiplatform support, and free price.

Features

Some of Audacity's features include:

Importing and exporting WAV, MP3 (via the LAME MP3 Encoder, downloaded separately), Ogg Vorbis, and other file formats
Recording and playing sounds
Editing via Cut, Copy, Paste (with unlimited Undo)
Multi-track mixing
Digital effects and effect plug-ins. Additional effects can be written with Nyquist
Amplitude envelope editing
Noise removal
Support for multichannel modes with sampling rates up to 96 kHz with 24 bits per sample
The ability to make precise adjustments to the audio's speed, while maintaining pitch, in order to synchronise it with video, run for the right length of time, etc. Unlike many other programs, Audacity has very few audible artifacts (doubling, or chorus type effects) when lengthening or shortening a file.
High ease of use

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