Features

Recording

• 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 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.
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Editing

• 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.

Effects

• 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:
  • Echo
  • Phaser
  • Wahwah
  • 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.

Plug-Ins

• Add new effects with LADSPA plugins.
• Includes some sample plugins .
• Load VST plugins for Windows and Mac, with the optional VST Enabler.
• Write new effects with the built-in Nyquist programming language.

Analysis

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