Audio coding format

audio coding standardaudio compression formatAudio codingaudio coding formatsaudio compressionaudio layercoding formatcoding formatscompressed audio format
An audio coding format (or sometimes audio compression format) is a content representation format for storage or transmission of digital audio (such as in digital television, digital radio and in audio and video files).wikipedia
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MP3

.mp3MP3 downloadmp3s
Examples of audio coding formats include MP3, AAC, Vorbis, FLAC, and Opus. A specific software or hardware implementation capable of audio compression and decompression to/from a specific audio coding format is called an audio codec; an example of an audio codec is LAME, which is one of several different codecs which implements encoding and decoding audio in the MP3 audio coding format in software.
MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is a coding format for digital audio.

Advanced Audio Coding

AACAAC/AAC+/eAAC+.aac
Examples of audio coding formats include MP3, AAC, Vorbis, FLAC, and Opus. As such, the user normally doesn't have a raw AAC file, but instead has a .m4a audio file, which is a MPEG-4 Part 14 container containing AAC-encoded audio.
Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression.

Vorbis

Ogg VorbisOGGaoTuV
Examples of audio coding formats include MP3, AAC, Vorbis, FLAC, and Opus.
The project produces an audio coding format and software reference encoder/decoder (codec) for lossy audio compression.

FLAC

.flacFree Lossless Audio CodecFLAC
Examples of audio coding formats include MP3, AAC, Vorbis, FLAC, and Opus. Lossless audio coding formats such as FLAC and Apple Lossless are sometimes available, though at the cost of larger files.
FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation.

Opus (audio format)

OpusOpus audio format.opus
Examples of audio coding formats include MP3, AAC, Vorbis, FLAC, and Opus.
Opus is a lossy audio coding format developed by the Xiph.Org Foundation and standardized by the Internet Engineering Task Force, designed to efficiently code speech and general audio in a single format, while remaining low-latency enough for real-time interactive communication and low-complexity enough for low-end embedded processors.

Content format

formatcontent representation formatformats
An audio coding format (or sometimes audio compression format) is a content representation format for storage or transmission of digital audio (such as in digital television, digital radio and in audio and video files).

Audio codec

audio codecsaudio codingcodec
A specific software or hardware implementation capable of audio compression and decompression to/from a specific audio coding format is called an audio codec; an example of an audio codec is LAME, which is one of several different codecs which implements encoding and decoding audio in the MP3 audio coding format in software.
In software, an audio codec is a computer program implementing an algorithm that compresses and decompresses digital audio data according to a given audio file or streaming media audio coding format.

Digital radio

digitalDABdigital transmission
An audio coding format (or sometimes audio compression format) is a content representation format for storage or transmission of digital audio (such as in digital television, digital radio and in audio and video files).
It is based on the MPEG-1 Audio Layer II audio coding format and this has been co-ordinated by the WorldDMB.

Audio file format

audio fileaudioaudio files
As such, the user normally doesn't have a raw AAC file, but instead has a .m4a audio file, which is a MPEG-4 Part 14 container containing AAC-encoded audio.
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.

Video coding format

video compression formatvideo compression standardvideo compression
De facto standards for adding metadata tags such as title and artist to MP3s, such as ID3, are hacks which work by appending the tags to the MP3, and then relying on the MP3 player to recognize the chunk as malformed audio coding and therefore skip it. In video files with audio, the encoded audio content is bundled with video (in a video coding format) inside a multimedia container format.
Video content encoded using a particular video coding format is normally bundled with an audio stream (encoded using an audio coding format) inside a multimedia container format such as AVI, MP4, FLV, RealMedia, or Matroska.

Apple Lossless

ALAC.m4aApple Lossless Audio Codec
Lossless audio coding formats such as FLAC and Apple Lossless are sometimes available, though at the cost of larger files.
Apple Lossless, also known as Apple Lossless Audio Codec (ALAC), or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music.

Comparison of audio coding formats

audio
Comparison of audio coding formats
The following tables compare general and technical information for a variety of audio coding formats.

Data compression

compressionvideo compressioncompressed
Data compression#Audio
Different audio and speech compression standards are listed under audio coding formats.

Digital audio

digital musicaudiodigital
An audio coding format (or sometimes audio compression format) is a content representation format for storage or transmission of digital audio (such as in digital television, digital radio and in audio and video files).

Digital television

digitaldigital TVDTV
An audio coding format (or sometimes audio compression format) is a content representation format for storage or transmission of digital audio (such as in digital television, digital radio and in audio and video files).

LAME

LAME encoderLAME MP3 encoderlibmp3lame
A specific software or hardware implementation capable of audio compression and decompression to/from a specific audio coding format is called an audio codec; an example of an audio codec is LAME, which is one of several different codecs which implements encoding and decoding audio in the MP3 audio coding format in software.

Specification (technical standard)

specificationspecificationstechnical specifications
Some audio coding formats are documented by a detailed technical specification document known as an audio coding specification. Some such specifications are written and approved by standardization organizations as technical standards, and are thus known as an audio coding standard. The term "standard" is also sometimes used for de facto standards as well as formal standards.

Standards organization

standards organisationstandards bodystandards
Some audio coding formats are documented by a detailed technical specification document known as an audio coding specification. Some such specifications are written and approved by standardization organizations as technical standards, and are thus known as an audio coding standard. The term "standard" is also sometimes used for de facto standards as well as formal standards.

Technical standard

standardstandardsindustry standard
Some audio coding formats are documented by a detailed technical specification document known as an audio coding specification. Some such specifications are written and approved by standardization organizations as technical standards, and are thus known as an audio coding standard. The term "standard" is also sometimes used for de facto standards as well as formal standards.

De facto standard

de facto'' standardde factode facto'' standards
Some audio coding formats are documented by a detailed technical specification document known as an audio coding specification. Some such specifications are written and approved by standardization organizations as technical standards, and are thus known as an audio coding standard. The term "standard" is also sometimes used for de facto standards as well as formal standards.

MPEG-4 Part 14

MP4.mp4M4A
As such, the user normally doesn't have a raw AAC file, but instead has a .m4a audio file, which is a MPEG-4 Part 14 container containing AAC-encoded audio.

Metadata

meta datameta-datacommunications metadata
The container also contains metadata such as title and other tags, and perhaps an index for fast seeking.

ID3

ID3 tagsID3v1.1tags
De facto standards for adding metadata tags such as title and artist to MP3s, such as ID3, are hacks which work by appending the tags to the MP3, and then relying on the MP3 player to recognize the chunk as malformed audio coding and therefore skip it. In video files with audio, the encoded audio content is bundled with video (in a video coding format) inside a multimedia container format.

Kludge

hackKludgescomputer hackers
De facto standards for adding metadata tags such as title and artist to MP3s, such as ID3, are hacks which work by appending the tags to the MP3, and then relying on the MP3 player to recognize the chunk as malformed audio coding and therefore skip it. In video files with audio, the encoded audio content is bundled with video (in a video coding format) inside a multimedia container format.

Digital container format

container formatcontainercontainer formats
De facto standards for adding metadata tags such as title and artist to MP3s, such as ID3, are hacks which work by appending the tags to the MP3, and then relying on the MP3 player to recognize the chunk as malformed audio coding and therefore skip it. In video files with audio, the encoded audio content is bundled with video (in a video coding format) inside a multimedia container format. Audio content encoded in a particular audio coding format is normally encapsulated within a container format.