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Audacity is a free open source digital audio editor and recording computer software application, available for Windows, OS X, Linux and other operating systems.〔〔(【引用サイトリンク】title=About Audacity )〕 Audacity was started in the fall of 1999 by Dominic Mazzoni and Roger Dannenberg at Carnegie Mellon University and was released on May 28, 2000 as version 0.8.〔"Version 0.8: May 28, 2000" in README.txt of audacity-win-0.8.zip〕〔(【引用サイトリンク】title=Credits )〕 , it was the 11th most popular download from SourceForge, with 76.5 million downloads. Audacity won the SourceForge 2007 and 2009 Community Choice Award for Best Project for Multimedia.〔(【引用サイトリンク】title=SourceForge.net: 2009 Community Choice Awards )〕 In March 2015 hosting was moved to FossHub and by 4 July 2015 it had exceeded 10 million downloads there.〔(【引用サイトリンク】url=http://web.archive.org/web/20150704033900/http://www.fosshub.com// )〕 It is still under active development, and the latest release, version 2.1.1, was announced in July 2015.〔(【引用サイトリンク】url=http://web.audacityteam.org/ )〕 ==Features and usage== In addition to recording audio from multiple sources, Audacity can be used for post-processing of all types of audio, including podcasts by adding effects such as normalization, trimming, and fading in and out. Audacity has also been used to record and mix entire albums, such as by Tune-Yards.〔Frere-Jones, Sasha (May 2, 2011). "(World of Wonder: How Merrill Garbus left the theatre and took the stage )." ''The New Yorker''. Retrieved 2015-05-16.〕 It is also currently used in the UK OCR National Level 2 ICT course for the sound creation unit. Audacity's features include: * Importing and exporting of WAV, AIFF, MP3 (via the LAME encoder, downloaded separately), Ogg Vorbis, and all file formats supported by libsndfile library. Versions 1.3.2 and later support Free Lossless Audio Codec (FLAC). Version 1.3.6 and later also support additional formats such as WMA, AAC, AMR and AC3 via the optional FFmpeg library.〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/importing_audio.html )〕 * Recording and playing back sounds 〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/playing_and_recording.html )〕 * * Scrubbing (Version 2.1.1 and later) 〔(【引用サイトリンク】url=http://manual.audacityteam.org/man/Scrubbing_and_Seeking )〕 * Editing via cut, copy, and paste, with unlimited levels of undo〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/edit_menu.html )〕 * Conversion of cassette tapes or records into digital tracks by splitting the audio source into multiple tracks based on silences in the source material 〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/tutorial_copying_tapes_lps_or_minidiscs_to_cd.html )〕 * Multitrack mixing 〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/tracks_menu )〕 * A large array of digital effects and plug-ins.〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/index_of_effects_generators_and_analyzers.html )〕 Additional effects can be written with Nyquist, a Lisp dialect.〔(【引用サイトリンク】url=http://wiki.audacityteam.org/wiki/Nyquist_Plugins_Reference )〕 * Built-in LADSPA, VST(32-bit) and Nyquist plug-in support〔(【引用サイトリンク】title=Audacity: Plug-Ins and Libraries )〕 * Amplitude envelope editing 〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/envelope_tool.html )〕 * Noise Reduction based on sampling the noise to be minimized.〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/noise_reduction.html )〕 * Vocal Reduction and Isolation for the creation of karaoke tracks and isolated vocal tracks.〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/vocal_reduction_and_isolation.html )〕 * Audio spectrum analysis using the Fourier transform algorithm 〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/plot_spectrum.html )〕〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/spectrogram_view.html )〕 * Support for multi-channel modes with sampling rates up to 96 kHz with 32 bits per sample 〔(【引用サイトリンク】url=http://wiki.audacityteam.org/wiki/Multichannel_Recording )〕 * Precise adjustments to the audio speed (tempo) while maintaining pitch in order to synchronize it with video or run for a predetermined length of time 〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/change_tempo.html )〕 * Adjusting audio pitch while maintaining speed and adjusting audio speed while maintaining pitch 〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/change_pitch.html )〕 * Features of modern multitrack audio software including navigation controls, zoom and single track edit, project pane and XY project navigation, non-destructive and destructive effect processing, audio file manipulation (cut, copy, paste) * Cross-platform operation — Audacity works on Windows, Mac OS X, and Unix-like systems (including Linux and BSD) 〔(【引用サイトリンク】url=http://web.audacityteam.org/download/ )〕 * Audacity uses the wxWidgets software library to provide a similar graphical user interface on several different operating systems.〔(【引用サイトリンク】url=http://wxwidgets.org/ )〕 *LADSPA, VST (32-bit) and Audio Unit (OS X) effects now support real-time preview (from version 2.1.0 onwards). Note: Real-time preview does not yet support latency compensation.〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/real_time_preview_of_effects.html )〕 *Saving and loading of user presets for effect settings across sessions (from 2.1.0 onwards).〔(【引用サイトリンク】url=http://manual.audacityteam.org/o/man/manage_effects_generators_and_analyzers.html )〕 Audacity supports the LV2 open standard for plugins and can therefore load software like Calf Studio Gear. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Audacity (audio editor)」の詳細全文を読む スポンサード リンク
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