Audacity v1.3.3 beta (Pc/Mac/Universal/Linux/Free)

Making Music

Beta version 1.3.3

Opening/saving formats

* Import of audio from QuickTime (mov, aac, m4a) files now supported on OSX.
* Broadcast Wave Format (BWF) wave files can now be imported.


* Metadata can be added to OGG files.
* Improved Export option selection.
* Additional export options added to MP3 and FLAC file formats.
* Command line exporter now supported on Windows and OSX.

EQ effect

* Responsiveness improved.
* Several enhancements added.
* Batch support added.

New Auto Duck effect
Added previewing to AudioUnit effects.
Much improved Noise Removal effect
Effects previewing can now be canceled.
New DTMF Tone Generator effect
Additional options available in Noise effect.
Improved the Tone Generation effects.
Other features
New built-in screen capture utility
Major speed improvement in Spectrogram rendering
Increased support for drag and drop on OSX.
Support added for building against wxWidgets 2.8.x.
Can now open multiple Audacity Projects at once from Explorer on Windows.
Improved main window sliders.
New support for snapping while selecting and sliding
Improved track focus handling and visual feedback.
Speed improvements and handling of resizing/zooming in tracks
Spectrum view can now be zoomed.
New internal file cache to improve handling of project files over networks
Many improvements to language specific translations
Numerous stability improvements

The Free, Cross-Platform Sound Editor

Audacity® is free, open source software for recording and editing sounds. It is available for Mac OS X, Microsoft Windows, GNU/Linux, and other operating systems.


You can use Audacity to:

* Record live audio.
* Convert tapes and records into digital recordings or CDs.
* Edit Ogg Vorbis, MP3, and WAV sound files.
* Cut, copy, splice, and mix sounds together.
* Change the speed or pitch of a recording.
* And more!


This is a list of features:


Audacity can record live audio through a microphone or mixer, or digitize recordings from cassette tapes, vinyl records, or minidiscs. With some sound cards, it can also capture streaming audio.

* Record from microphone, line input, or other sources.
* Dub over existing tracks to create multi-track recordings.
* Record up to 16 channels at once (requires multi-channel hardware).
* Level meters can monitor volume levels before, during, and after recording.

Import and Export

Import sound files, edit them, and combine them with other files or new recordings. Export your recordings in several common file formats.

* Import and export WAV, AIFF, AU, and Ogg Vorbis files.
* Import MPEG audio (including MP2 and MP3 files) with libmad.
* Export MP3s with the optional LAME encoder library.
* Create WAV or AIFF files suitable for burning to CD.
* Import and export all file formats supported by libsndfile.
* Open raw (headerless) audio files using the “Import Raw” command.
* Note: Audacity does not currently support WMA, AAC, or most other proprietary or restricted file formats.


* Easy editing with Cut, Copy, Paste, and Delete.
* Use unlimited Undo (and Redo) to go back any number of steps.
* Very fast editing of large files.
* Edit and mix an unlimited number of tracks.
* Use the Drawing tool to alter individual sample points.
* Fade the volume up or down smoothly with the Envelope tool.


* Change the pitch without altering the tempo, or vice-versa.
* Remove static, hiss, hum, or other constant background noises.
* Alter frequencies with Equalization, FFT Filter, and Bass Boost effects.
* Adjust volumes with Compressor, Amplify, and Normalize effects.
* Other built-in effects include:
o Echo
o Phaser
o Wahwah
o Reverse

Sound Quality

* Record and edit 16-bit, 24-bit, and 32-bit (floating point) samples.
* Record at up to 96 KHz.
* Sample rates and formats are converted using high-quality resampling and dithering.
* Mix tracks with different sample rates or formats, and Audacity will convert them automatically in realtime.


* Add new effects with LADSPA plugins.
* Audacity includes some sample plugins by Steve Harris.
* Load VST plugins for Windows and Mac, with the optional VST Enabler.
* Write new effects with the built-in Nyquist programming language.


* Spectrogram mode for visualizing frequencies.
* “Plot Spectrum” command for detailed frequency analysis.

Free and Cross-Platform

* Licensed under the GNU General Public License (GPL).
* Runs on Mac OS X, Windows, and GNU/Linux.