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Audacity

Audacity is a free, easy-to-use audio editor and recorder for Windows, Mac OS X, 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, WAV or AIFF sound files.
  • Cut, copy, splice or mix sounds together.
  • Change the speed or pitch of a recording.
  • And more! See the complete list of features.

Recording

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 FLAC, 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.

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.
  • 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.

Analysis

  • Spectrogram mode for visualizing frequencies.
  • “Plot Spectrum” command for detailed frequency analysis.
Review by Jared Moya

Audacity has an average rating 3.9 out of 5 based on 34 user ratings.

10 comments
Anglia 1948
Anglia 1948

can anyone tell me how to get input divice or how to install

aj
aj

Even I m facing the same problem. The audio recording device option cannot be changed and the tab is grey and clicking doesnt affect it. I cant set out the wave out mix. I tried the preferences and the 2 audio recording device options available are : a. Microsoft sound mapper - Input b. Microphone (realtek) There is no "wave out mix."

Jan
Jan

why the hell can’t I set “Wave Out Mix” as the audio recording device??? I haven’t change anything and the program doesn’t let me change audio recording device. The tab is gray and doesn’t effect clicking on it.

smilie
smilie

it keeps saying Error please check the input device settings and project sample rate... what do i do to fix that

Troy Smith
Troy Smith

This works amazing. I recommend it for EVERYONE. 2 year with it, and no regrets.

1cooldude
1cooldude

Very good software for a variety of users. Have used it for about four years.

ConfusedMime
ConfusedMime

An easy to use and relatively simple but effective audio editor great for quick fixes.

mountain_rage
mountain_rage

Great opensource software if you learn how to use it. Even better if you add the plug in packs found on the Audacity forums

Jared Moya
Jared Moya

Since Microsoft intentionally removes the Stereo Mix / Waveout Mix option from its drivers, you need to try to download the latest version of the sound card driver and install it. If you have an onboard sound card, go to the support section of the manufacturer of your PC (such as Dell/HP/Toshiba/Sony/Fujitsu/Lenovo/Acer) and download an audio driver for your model of the PC that works with your Windows version. Please note that the manufacturer doesn't support Windows 7, you can try to use Windows Vista driver, althouth there is no guarantee that it will work and will not damage your hardware.If you can't find a driver, you need to know the sound card that your PC has. Then you can go to the web-site of RealTek, Sigmatel, Creative,... and download a driver for your particular model that works on Windows 7/XP/Vista/....If the driver has an installer, you can easily install it. If the driver doesn't come with an installer, unpack it and:1. Open "Control Panel". 2. Open "System". 3. On the left side under Tasks click on the "Device Manager". 4. Scroll down to "Sound, video and game controller" 5. Open that and you will see "High definition audio" 6. Right click and select "Update driver software" 7. In the new window choose "Browse my computer" and "Let me pick..." 8. Uncheck the "Show compatible hardware" box 9. Click "Have disk" 10. Browse to the location that you extracted your driver files to and just keep opening the Vista folder until you get to a bunch of .INF files. Don't select any of those just have that open. Your computer should have the one it needs in the file name box. Just click open and then "OK". 11. The window should open with a list of drivers. Choose your one and hit "Next" to install it.

RoofingGuy
RoofingGuy

Even after removing the existing driver, and re-installing the sound driver straight from RealTek (as mentioned), and re-booting the system, there is still no "Wave Out Mix" option -- still just "Master".


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