A number of formats exist for storing sound recordings. Some of these formats are associated with specific technologies, and others are used strictly for proprietary reasons. Ubuntu supports several of the most popular sound formats, including
. raw (.raw)—More properly known as headerless format, audio files using this format contain an amorphous variety of specific settings and encodings. All other sound files contain a short section of code at the beginning—a header—that identifies the format type.
. MP3 (.mp3)—A popular, but commercially licensed, format for the digital encoding used by many Linux and Windows applications. MP3 is not supported by any software included with Ubuntu (which advises you to use the open source Ogg-Vorbis format instead).
. WAV (.wav)—The popular uncompressed Windows audio-visual sound format. It is often used as an intermediate file format when encoding audio.
. Ogg-Vorbis (.ogg)—Ubuntu’s preferred audio encoding format. You enjoy better compression and audio playback, and freedom from lawsuits when you use this open-source encoding format for your audio files.
To learn more about the technical details of audio formats, read Chris Bagwell’s Audio Format FAQ at http://www.cnpbagwell.com/audio.html.
Reference: Sams Ubuntu Unleased
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