Audacity

Audacity is a free audio recorder/editor/mixer. You can record sounds, play sounds, import and export WAV, AIFF, and MP3 files, and more. Use it to edit your sounds using Cut, Copy and Paste (with unlimited Undo), mix tracks together, or apply effects to your recordings. It also has a built-in amplitude envelope editor, a customizable spectrogram mode and a frequency analysis window for audio analysis applications. Built-in effects include Bass Boost, Wahwah, and Noise Removal, and it also supports VST plug-in effects.

• Effects
  • Built-in effects now support presets.
  • New Limiter effect replaces Hard Limiter effect.
  • New Crossfade Clips effect to apply a simple crossfade to a selected pair of clips in a single audio track.
  • Can now add/remove effects from Generate and Effects menus.
  • New version of Vocal Removal Effect.
  • Classic Filters now included as an opt-in effect.
• Interface
  • Much faster editing with larger projects, thanks to a faster method for storing the autosave recovery file.
  • Performance improvements for Draw Tool and zooming of Spectrogram views.
  • Zero-padding Spectrograms Preference smooths the image for short window sizes.
  • Scrubbing and Seeking, including backwards play.
  • Quick-Play from Timeline enhancements, particularly for looping.
  • (Windows) Language of Audacity user interface is now set in installer.
  • More VI usability enhancements for track focus & navigation.
• Other Changes
  • Upgraded to Nyquist 3.0.9 and libflac 1.3.1.
  • Upgraded LV2 libs, LV2 GUIs on Linux, LV2 factory Presets.
  • Crash report integration.
  • Modules can be enabled in Preferences. Mod-nyq-bench available as an experimental module (but not in the default download).

Bug Fixes

• Crashes
  • Crash using Undo while dragging sample points
  • Crash using File > Close on project window when Screenshot Tools was open.
  • FFmpeg Custom Export: Crashes importing presets.
  • (OS X) Crash closing Track Gain or Pan adjustment box.
  • (OS X) Crash closing project window between save project dialogues
  • (Linux) TAL VST (but not other VST's) crashed if previewing built-in effect
  • (Linux) SPACE could not be used/could crash in context menus that have a checkbox.
• Interface
  • LV2 effects did not use parameters when using Chains.
  • Built in Generators were not usable in Chains.
  • Plot Spectrum could not change values without losing focus.
  • Track dropdown menu settings could affect other tracks.
  • Slight mismatch of vertical scale with linear spectrogram view.
  • RTP effect Play/Stop button remained deactivated after built-in preview ended.
  • Contrast: "Move forward or backward through active windows" did not refocus Contrast.
  • LADSPA and LV2 generate plug-ins failed when white space selected.
• Mac OS X
  • Confusing behaviour importing / exporting AU presets. In particular, Apple Audio Units silently applied an imported preset.