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For example, MP3 and AAC dominate the personal audio market in terms of market share, though many other formats are comparably well suited to fill this role from a purely technical standpoint. First public release date is first of either specification publishing or source releasing, or in the case of closed-specification, closed-source codecs ...
fre:ac is a free audio converter and CD extractor for Windows, Linux, macOS, and FreeBSD, distributed under the GPL-2.0-or-later. [2]Besides extracting audio from compact discs (with various features including hidden track detection), fre:ac can also convert audio files from one format to another or to the same format at a lower bitrate (a higher bitrate can be forced but this does not ...
The original WMA codec, known simply as WMA, was conceived as a competitor to the popular MP3 and RealAudio codecs. [2] [3] WMA Pro, a newer and more advanced codec, supports multichannel and high-resolution audio. [4] A lossless codec, WMA Lossless, compresses audio data without loss of audio fidelity (the regular WMA format is lossy). [4]
Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. It was designed to be the successor of the MP3 format and generally achieves higher sound quality than MP3 at the same bit rate. [4] AAC has been standardized by ISO and IEC as part of the MPEG-2 and MPEG-4 specifications.
Audio file icons of various formats. An audio file format is a file format for storing digital audio data on a computer system. The bit layout of the audio data (excluding metadata) is called the audio coding format and can be uncompressed, or compressed to reduce the file size, often using lossy compression.
WMA: Lossy: 1999-08 Proprietary [92] ACM [d] No No Yes Yes No No No No Opus: Lossy: 2012-09 Royalty-free Yes Yes Yes Yes Yes No Yes No No Vorbis: Lossy: 2000-05 Open source [93] Yes Private No No Tricky [δ] No No No No MP2: Lossy: 1991-12 Patent-free [ε] Yes Yes No Yes Yes Yes Yes No No MP1: Lossy: 1991-12 Expired patents Yes Yes No Yes Yes ...
It can convert audio to MP3, WMA, WAV, FLAC, AAC, M4A, and OGG, and can prepare files for playback on various portable media players, such as Zune, Coby, SanDisc, Sansa, iRiver, Walkman, Archos, and GoGear. It can convert audio files into M4A and M4R files for iPad, iPhone, and iPod and automatically adds converted files to the iTunes library.
A lossless audio coding format reduces the total data needed to represent a sound but can be de-coded to its original, uncompressed form. A lossy audio coding format additionally reduces the bit resolution of the sound on top of compression, which results in far less data at the cost of irretrievably lost information.