MP3


Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Acronyms, Wikipedia.

MP3

1. MPEG-1 Audio Layer-3: tradename for software created by the Motion Picture Experts Group that enables files to be compressed quickly to 10% or less of their original size for storage on disk or hard drive or esp for transfer across the internet
2. an audio or video file created in this way

MP3

MP3

(MPEG-1 Audio Layer III) The audio compression technology that revolutionized digital music (see "MP3 Shook Up the Industry" below). Derived from the audio sections of the MPEG-1 and MPEG-2 video specifications, MP3 compresses CD-quality sound by a factor of roughly 10, while retaining most of the original fidelity. For example, a 40MB CD track is turned into approximately a 4MB MP3 file. See CD-DA.

MP3 files are played on the computer via media player software, such as Apple's iTunes and Microsoft's Windows Media Player, as well as in countless iPods and other handheld players (see digital music player). MP3 sound quality cannot fully match the original CD, and true audiophiles complain bitterly, but millions of people consider it "good enough" because they can pack thousands of songs into a tiny pocket-sized player.

Ripping/Importing
Converting a digital audio track from a music CD to the MP3 format (or other audio format) is called "ripping" or "importing," and this conversion function is built into iTunes, Windows Media Player and other jukebox software. Stand-alone rippers are also available.

Bit Rates Are Important
While 128 Kbps (kilobits per second) is considered the norm for MP3 files, MP3s can be ripped to bit rates from 8Kbps to 320 Kbps. The higher the bit rate, the better the sound and the larger the file. Many audiophiles rip CDs at a much higher rate for improved audio quality. In the following dialog box from Windows Media Player 10, the "Audio quality" slider is used to select four bit rates for MP3 encoding: 128, 192, 256 and 320 Kbps. There are additional variations of MP3 as well as other widely used audio formats (see MP3 VBR, mp3PRO and codec examples).


Proof of the Pudding
These examples taken in a Mac show the original CD file sizes (top) and the resulting MP3 files (bottom). The CD was ripped to MP3 in iTunes at a recording rate of 160 Kbps, and the album was reduced from 344MB to 39MB. When a music CD is inserted into a Mac, the CD's files appear in Apple's AIFF format, which is the same uncompressed 16-bit PCM format as the CD (see AIFF, CD-DA and PCM).




MP3 Shook Up the Industry


By the end of the 1990s, music fans discovered that a CD song title converted to MP3 would still sound pretty good even though it was only 1/10th the size of the original CD track. Smaller files meant faster downloading. At an average of 4MB, it took less than 15 minutes to download a file over an analog dial-up modem. With a broadband connection on a college campus, it took seconds.

MP3 created a worldwide auditioning system for new musicians who could freely distribute their music to gain an audience. It also let people swap copyrighted titles with impunity. File sharing services such as the original Napster and Kazaa made it a global phenomenon, and the record industry went into a frenzy over violations of its copyrights (see Napster). Today, copyrighted MP3 files are still shared over the Internet; however, online music stores, including the resurrected Napster, sell songs legally and successfully. See peer-to-peer network and DRM.

Developed in Germany
MP3 was developed in the late 1980s by the Fraunhofer Institute in Germany. It uses perceptual audio coding to compress the data by eliminating frequencies that would not normally be heard because they overlap and cancel each other. See ID3 tag, audioblog, podcast, iPod, AAC, codec examples, perceptual audio coding and cuckoo egg.


Proof of the Pudding
These examples taken in a Mac show the original CD file sizes (top) and the resulting MP3 files (bottom). The CD was ripped to MP3 in iTunes at a recording rate of 160 Kbps, and the album was reduced from 344MB to 39MB. When a music CD is inserted into a Mac, the CD's files appear in Apple's AIFF format, which is the same uncompressed 16-bit PCM format as the CD (see AIFF, CD-DA and PCM).



Proof of the Pudding
These examples taken in a Mac show the original CD file sizes (top) and the resulting MP3 files (bottom). The CD was ripped to MP3 in iTunes at a recording rate of 160 Kbps, and the album was reduced from 344MB to 39MB. When a music CD is inserted into a Mac, the CD's files appear in Apple's AIFF format, which is the same uncompressed 16-bit PCM format as the CD (see AIFF, CD-DA and PCM).
References in periodicals archive ?
What do hearing experts think may damage the hearing of young people using iPods and other MP3 players?
To play an MP3 on your computer, you'll need to download (save from the Web onto your computer) an MP3 player such as Winamp (for Windows) or Macast (for a Macintosh).
The major labels' first collaborative effort has been in testing IBM's Electronic Music Management System (also known as the Madison Project), a sales and distribution system that has all sorts of James Bond-sounding copyright protection devices encoded in the MP3, like encryption, watermarking, and file lockout.
Using MP3 is legal if the song's copyright holder has granted permission to download and play the song.
Record industry executives are quick to point out that most of the MP3 files available are illegally made, depriving artists of their royalties.
Table 3: Global Market for HDD MP3 Players (2000-2010): Geographic Regions Ranked by CAGR - US, Europe, Asia-Pacific (Excl.
By adding copyright protection to MP3 files, Mjuice.
This site has an in-depth list of MP3 sites, search engines and sites from which you can download music.
In the past year, MP3 has caught on with Internet surfers and spawned thousands of Websites offering free downloadable music.
reports that, pursuant to an order of the Criminal Court of Vicenza in northern Italy, yesterday the Italian Fiscal Police seized SanDisk MP3 players at an Italian outlet of the French retailer Auchan.
The Skullcandy MacGyver MP3 Watch provides up to 1 Gig of memory for podcasts and music on user's wrists.
As one of the top five MP3 device manufacturers, iriver represents the biggest potential ready-made audience for podcasters to date," said Russell Holliman, founder and CEO of Podcast Ready.