MPEG-1 Audio Layer 3 or MPEG-2 Audio Layer 3 or MPEG-1 or 2 Audio Layer III, more commonly referred to as MP3, is a patented digital audio encoding format using a form of lossy data compression. It is a common audio format for consumer audio storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on digital audio players.
MP3 is an audio-specific format that was designed by the Moving Picture Experts Group as part of its MPEG-1 standard and later extended in MPEG-2 standard. The group was formed by several teams of engineers at Fraunhofer IIS, AT&T-Bell Labs, Thomson-Brandt, CCETT, and others. MPEG-1 Audio (MPEG-1 Part 3) was approved as a committee draft of ISO/IEC standard in 1991, finalised in 1992 and published in 1993. Backwards compatible MPEG-2 Audio (MPEG-2 Part 3) was published in 1995.
The use in MP3 of a lossy compression algorithm is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio for most listeners. An MP3 file that is created using the setting of128 kbit/s will result in a file that is about 11 times smaller than the CD file created from the original audio source. An MP3 file can also be constructed at higher or lower bit rates, with higher or lower resulting quality.
The compression works by reducing accuracy of certain parts of sound that are deemed beyond the auditory resolution ability of most people. This method is commonly referred to as perceptual coding. It uses psychoacoustic models to discard or reduce precision of components less audible to human hearing, and then records the remaining information in an efficient manner.
This technique is often presented as relatively conceptually similar to the principles used by JPEG, an image compression format. The specific algorithms, however, are rather different: JPEG uses a built-in vision model that is very widely tuned (as is necessary for images), while MP3 uses a complex, precise masking model that is much more signal dependent.
WinX DVD Ripper: Free DVD to MP3 converter which is made for help users convert DVD to MP3, AVC, AVI, FLV, MPEG format with no fees involved.
WinX DVD Ripper Platinum: Advanced version of WinX DVD Ripper, apart from convert DVD to MP3 at fastest speed and excellent quality, also capable of converting DVD to MP3, AVC, MP4, MOV, iPhone, iPod, iPad, etc. Makes perfect 1:1 copy with 5 minutes. Constantly update to defeat upcoming DVD copy protections.
WinX HD Video Converter Deluxe: Built in hundreds of A/V codecs and equipped with Online Dailymotion/Facebook/YouTube Video Downloader and Photo Slideshow Maker functions. As all-in-one HD Video Converter software, it helps you transcode HD video formats like convert AVCHD M2TS to MKV, convert Blu-ray to MKV, H.265/MKV to MP4, etc. Moreover, it is embedded with numerous profile settings for Apple, Samsung, HTC, Sony, Microsoft portable devices, iOS, Android, Windows mobiles. Convert MKV to iPhone, MKV to iPad are good examples.
WinX DVD Ripper for Mac: Mac version WinX DVD Ripper Platinum, runs perfectly on Mac OS X Tiger/Leopard/Snow Leopard, convert DVD to MP3, AVC, MP4, MOV, iPhone, iPad, iPod, etc.
WinX HD Video Converter for Mac: Professional HD Video converter for converting HD Videos on Mac OS, provides the perfect solution to convert Blu-ray videos and videos from HDTV and HD camcorders, like JVC, Panasonic, Sony and Cannon to other formats. Also act as a Mac screen and camera video recorder, slideshow maker, Online Dailymotion/Facebook/YouTube video downloader, etc. Running perfectly on Mac OS X Leopard/Snow Leopard/Lion/Mountain Lion/Mavericks/Yosemite.
AAC vs MP3, MP4 to MP3, AVI to MP3, YouTube to MP3, WMV to MP3, MOV to MP3, MPEG-4, AVC, AC-3, DTS, iPod, Mplayer, QuickTime, VLC
Related External Source