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MP3 file format

Extension.mp3
Categoryaudio
Programs
Microsoft Windows Media Player
VLC media player
MPlayer
jetAudio
Zune
Audacity
Apple iTunes
Plex Media Center
Amarok
Xine
Totem
DescriptionThe .mp format refers to an audio coding format for digital audio that employs a form of lossy data compression. It's a widely used audio format for consumer audio streaming and storage and has become the standard codec for transferring and playing back music on most digital audio players. MP files reduce file size without significantly impacting perceived sound quality by eliminating sounds beyond most people's hearing range.
Technical detailsThe `.mp3` format, MPEG-1 Audio Layer III, is a commonly utilized digital audio format. Key technical details include:
- Lossy Compression: Reduces file size by removing inaudible sounds.
- Compression Ratio: Typically about 10:1, balancing quality and size.
- Bitrate: Encodes at variable rates, affecting quality and size.
- Sampling Rates: Supports a variety of rates, including CD quality.
- Channel Modes: Provides options for mono, stereo, joint stereo, and dual channel.
- Metadata: Contains information such as title, artist, and genre (ID3 tags).
- Streaming: Ideally suited for internet audio streaming.
- Universal Playback: Compatible with most devices and software.
- Variable Bitrate (VBR): Dynamically adjusts bitrate for efficiency.
- Frequency Range: Covers 20 Hz to 20 kHz (the range of human hearing).
- File Size: Significantly smaller than uncompressed audio.
- Psychoacoustic Model: Removes less audible frequencies.
- Developed by the Fraunhofer Society in the 1990s, the MP3 format revolutionized the music industry with its efficient compression and broad compatibility, simplifying digital audio storage and sharing.
MIME type
audio/mp3
audio/mpeg3
audio/mpg
audio/mpeg
audio/x-mpeg
audio/x-mpeg-3
audio/mp3
audio/x-mpegaudio
audio/x-mpg
audio/x-mp3