Audacity (audio editor)

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Audacity is a free and open source digital audio recording and editing software, available for Windows, macOS/OS X and Unix-like operating systems. Audacity began in the fall of 1999 by Dominic Mazzoni and Roger Dannenberg at Carnegie Mellon University and was released on 28 May 2000 as version 0.8.

On October 10, 2011, this is the 11th most popular download from SourceForge, with 76.5 million downloads. Audacity won the SourceForge Community Choices 2007 and 2009 Awards for the Best Project for Multimedia. In March 2015, hosting was moved to FossHub and on February 21, 2017, it has exceeded 51.8 million downloads there.

Video Audacity (audio editor)

Features and uses

In addition to recording audio from multiple sources, Audacity can be used to post 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. It is also currently used in the UK National Level 2 ICT subject for the voting unit.

Audacity features include:

• Four user-selectable themes allow users to choose the look & feel they like for apps (version 2.2.0 and later)
  • Four user-selectable color paths for wave view in the audio track (version 2.2.1 and later)
• Recording and replaying the sound of
  • Scrubbing (Version 2.1.1 and later)
  • The Timer record allows the user to schedule when the recording starts and ends to make the record unattended.
  • MIDI playback is available (from version 2.2.0 and so on)
• Edit
  • via cut, copy, and paste, with unlimited undo level
  • Features of modern multitrack audio software including navigation controls, zoom and single track edit, project panel and XY project navigation, non-destructive and destructive effect processing, audio file manipulation (cut, copy, paste)
  • Editing of envelope amplitudes
  • Appropriate adjustments for audio speed (tempo) while keeping the tone to sync with video or running for a predetermined time period
  • Convert a cassette or recording into a digital track by splitting an audio source onto multiple tracks based on silence in the source material
• Cross platform operation - Audacity works on Windows, macOS/OS X, and Unix-like (including Linux and BSD) systems
  • Audacity uses the wxWidgets software library to provide similar graphical user interfaces across multiple operating systems different.
• A large number of digital effects and plug-ins. Additional effects can be written with Nyquist, Lisp dialect.
  • Support for LADSPA, VST (32-bit) and nyquist plug-in support
  • Noise Reduction based on noise sampling to be minimized.
  • Vocal Reduction and Isolation for the creation of isolated karaoke tracks and vocal tracks.
  • Adjust audio pitch while maintaining speed and adjust audio speed while maintaining pitch
  • The LADSPA effects, VST (32-bit) and Audio Unit (macOS/OS X)) now support real-time preview (from version 2.1.0 and so on). Note: Real-time previews do not yet support latency compensation.
  • Store and load user presets for effect settings across sessions (from 2.1.0 and beyond).
• Multitrack mixing
  • Support for multi-channel mode with sampling rate up to 96Ã, kHz with 32 bits per sample
• Audio spectrum analysis using the Fourier transform algorithm
• Import and export WAV, AIFF, MP3 (via LAME encoder, downloaded separately), Ogg Vorbis, and all file formats supported by the libsndfile library. Versions 1.3.2 and later supported Free Lossless Audio Codec (FLAC). Versions 1.3.6 and later also support additional formats such as WMA, AAC, AMR, and AC3 through the optional FFmpeg library.
• Detect dropout error while recording with a loaded CPU
• A fully downloadable downloadable manual (or available online without downloading) .

Audacity supports open standard LV2 for plugins and therefore can load software such as Calf Studio Gear.

Maps Audacity (audio editor)

Limitations

Audacity only supports plug-in 32-bit or 64-bit VST audio effects, depending on which architecture is created, but not both at the same time. It does not support VST (VSTi) plugin tools.

Audacity has no dynamic equalizer control and real-time effects when recording.

Audacity does not natively import or export WMA, AAC, AC3 or most other proprietary file formats or restrictions; otherwise, an optional FFmpeg library is required.

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Language support

In addition to English language support, ZIP files from downloadable Audacity software programs include help files for African, Arabic, Basque, Bulgarian, Catalan, Chinese (simplified), Chinese (Traditional), Czech, Danish, Dutch, Finnish, French, Galician, German, Greek, Hungarian, Irish, Italian, Japanese, Lithuanian, Macedonian, Norwegian (Slovak, Slovak, Slovak, Slovak, Slovak, Slovenian, Spanish, Swedish, Turkish, Ukrainian, and Welsh) interface. Some Bengali help files are also included.

The Audacity website also provides tutorials in several languages.

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Architecture of courage

Layers and modules in Audacity. The diagram highlights three important classes in wxWidgets, each of which has reflections in Audacity. High level abstraction is generated from the lower related levels.

For example, the BlockFile system is a reflection of and built in wxFiles wxWidgets. Downward in the diagram is a narrow strip for "Specific Platform Implementation Layer."

Both wxWidgets and PortAudio are OS abstraction layers. Both contain conditional codes that choose between different implementations depending on the target platform.

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Reception

The free and open nature of Audacity has enabled it to become very popular in education, encouraging its developers to make user interfaces easier for students and teachers.

CNET rated Audacity 5/5 stars and called it "rich and flexible features". Preston Gralla of PC World said, "If you're interested in creating, editing and mixing, you'll want Audacity." Jack Wallen from Tech Republic highlights its features and ease of use. Michael Muchmore of PC Magazine rated 3.5/5 stars and said, "While not as slick or powerful as programs from people like Adobe, Sony, and M-Audio, Audacity is surprisingly feature-packed for devices free software. "

In Unix Programming Art , Eric S. Raymond says about Audacity "The main value of this program is that it has an incredibly transparent and natural user interface, connecting multiple barriers between users and possible sound files. "

Some authors criticize Audacity for uncomfortable user interfaces, destructive editing and lack of features, comparing unfavorable Audacity with competing products, requiring less action from users to perform tasks such as crossfade and noise reduction.

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Compatibility

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See also

• Comparison of free software for audio
• List of Linux audio software
• Multitrack recording

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Literature

James Crook, Amy Brown, Greg Wilson - Open Source Application Architecture - Chapter 2 Audacity , released 2012 under CC BY 3.0 (Open Access).

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References

Notes

• Franklin, Jerry (2006). "The Sheer Audacity: How to Get More, in Less Time, from Digital Audio Auditing Auditing Software": 92-105. doi :. 10,1109/IPCC.2006.320394 < span>
• Mazzoni, Dominic; Dannenberg, Roger B. (2002). "Quick Data Structure for Disk-Based Audio Editing". Computer Music Journal . 26 (2): 62-76. doi: 10.1162/014892602760137185. ISSNÃ, 0148-9267
• Bernardini, Nicola; Rocchesso, Davide (2002). "Making Sounds with Numbers: Tutorial on Music Software Dedicated to Digital Audio". New Music Research Journal . 31 (2): 141-151. doi: 10.1076/jnmr.31.2.141.8089. ISSN 0929-8215.

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External links

• Official website
• Audacity Wiki
• Edit audio in Linux: Audacity

Source of the article : Wikipedia