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Monday, September 4, 2017 2:21:14 PM

Audacity V3.2.1

Last updated on Sunday, October 9, 2022 - 19:42 by arslananwar372
Audacity
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Audacity is free, open source, cross-platform audio software for multi-track recording and editing.

 

Features

 

Recording

Audacity can record live audio through a microphone or mixer, or digitize recordings from other media. With some sound cards, and on any recent version of Windows, Audacity can also capture streaming audio.

  • Device Toolbar manages multiple recording and playback devices.
  • Level meters can monitor volume levels before, during and after recording. Clipping can be displayed in the waveform or in a label track.
  • Record from microphone, line input, USB/Firewire devices and others.
  • Record computer playback on Windows Vista and later by choosing “Windows WASAPI” host in Device Toolbar then a “loopback” input.
  • Timer Record and Sound Activated Recording features.
  • Dub over existing tracks to create multi-track recordings.
  • Record at very low latencies on supported devices on Linux by using Audacity with JACK.
  • Record at sample rates up to 192,000 Hz (subject to appropriate hardware and host selection). Up to 384,000 Hz is supported for appropriate high-resolution devices on Windows (using WASAPI), Mac OS X, and Linux.
  • Record at 24-bit depth on Windows (using Windows WASAPI or Windows DirectSound host), Mac OS X or Linux (using ALSA or JACK host).
  • Record multiple channels at once (subject to appropriate hardware).

 

Import and Export

  • Import sound files, edit them, and combine them with other files or new recordings. Export your recordings in many different file formats, including multiple files at once.
  • Import and Export WAV, AIFF, AU, FLAC and Ogg Vorbis files.
  • Fast “On-Demand” import of WAV or AIFF files (letting you start work with the files almost immediately) if read directly from source.
  • Import and export all formats supported by libsndfile such as GSM 6.10, 32-bit and 64-bit float WAV, RF64, and U/A-Law.
  • Import MPEG audio (including MP2 and MP3 files) using libmad.
  • Import raw (headerless) audio files using the “Import Raw” command.
  • Create WAV or AIFF files suitable for burning to audio CD.
  • Export MP3 files with the optional LAME encoder library.
  • Import and export AC3, M4A/M4R (AAC) and WMA with the optional FFmpeg library (this also supports import of audio from video files).

 

Sound Quality

  • Supports 16-bit, 24-bit and 32-bit (floating point) samples (the latter preserves samples in excess of full scale).
  • Sample rates and formats are converted using high-quality resampling and dithering.
  • Tracks with different sample rates or formats are converted automatically in real time.

 

Editing

Easy editing with Cut, Copy, Paste and Delete.

  • Find the spot to edit easily with scrubbing and seeking or Timeline Quick-Play.
  • Unlimited sequential Undo (and Redo) in the session to go back () any number of steps.
  • Edit and mix large numbers of tracks.
  • Multiple clips are allowed per track.
  • Label tracks with selectable Sync-Lock Tracks feature for keeping tracks and labels synchronized.
  • Draw Tool to alter individual sample points.
  • Envelope Tool to fade the volume up or down smoothly.
  • Automatic Crash Recovery in the event of abnormal program termination.

 

Accessibility

  • Tracks and selections can be fully manipulated using the keyboard.
  • Large range of keyboard shortcuts.
  • Excellent support for JAWS, NVDA and other screen readers on Windows, and for VoiceOver on Mac in legacy Audacity 2.1.1.

 

Effects

  • Real-time preview of LADSPA, LV2, VST and Audio Unit (macOS) effects.
  • Plug-in Manager handles plug-in installation and addition/removal of effects and generators from the menus.
  • Generate tones, silence, noise, instruments or rhythm track.
  • Change the pitch without altering the tempo.
  • Change the tempo without altering the pitch.
  • Noise Reduction to remove static, hiss, hum or other constant background noises.
  • Alter frequencies with Equalization, Bass and Treble, High Pass, Low Pass and Notch Filter effects.
  • Filter a frequency selection created in Spectrogram view or Spectral Selection Toolbar using spectral edit effects.
  • Adjust volume with Compressor, Amplify, Normalize, Fade In/Out, Studio Fade Out, Crossfade Clips, Crossfade Tracks and Adjustable Fade effects.
  • Reduce or Isolate Vocals given suitable stereo tracks (vocal reduction produces a stereo result).
  • Create voice-overs for podcasts or DJ sets using Auto Duck effect.
  • Other built-in effects include:
    • Distortion
    • Echo
    • Limiter
    • Paulstretch (extreme stretch)
    • Phaser
    • Reverb
    • Reverse
    • Truncate Silence
    • Wahwah
  • Run “Chains” of effects on a project or multiple files in Batch Processing mode.

 

Plug-ins

  • Support for LADSPA, LV2, Nyquist, VST and Audio Unit effect plug-ins.
  • Effects written in the Nyquist programming language can be easily modified in a text editor – or you can even write your own plug-in.
  • Experimental modules that extend the functionality of Audacity.

 

Analysis

  • Spectrogram view mode for visualizing and selecting frequencies.
  • Plot Spectrum window for detailed frequency analysis.
  • Sample Data Export for exporting a file containing amplitude values for each sample in the selection and Sample Data Import for import of numeric values from a plain ASCII text file
  • Contrast Analysis for analyzing average RMS volume differences between foreground speech and background music.
  • Support for adding VAMP analysis plug-ins.
  • Free and Cross-Platform
    • Licensed under the GNU General Public License (GPL).

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