MP3

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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 iTunes and Windows Media Player, as well as in iPods and audio equipment (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 device.

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.

Bit Rates Are Important
While 128 Kbps is considered the norm for MP3 files, MP3s can be ripped to bit rates up to 320 Kbps. The higher the rate, the better the sound and larger the file. There are variations of MP3 and other widely used audio formats (see codec examples). See high-resolution audio, MP3 VBR and mp3PRO.


The Encoding Bit Rate
This dialog box from Windows Media Player shows "Audio quality" set to 192 Kbps. The slider selects four encoding rates: 128, 192, 256 and 320.







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. Released in 1993, MP3 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).
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The audio version of "Monkey Mind" is available on the Monkey-Fish Dragon CD or Mp3 download. Other stories in the Monkey-Fish Dragon Series include "Wu Wei: A Catchy Fish Tale for Children," and "Kalpana: An Imaginary Story for Children." A beautiful book as well as a parent's trusted retraining tool, "Monkey Mind" is recommended for children age 4 and up.
Songs were rearranged for this special occasion by Richard Gibbs (Oingo Boingo), who was Davis' right-hand man when they scored "Queen of the Damned." Fans "became a believer" for five different parts - an MP3 download, a DVD, a CD/DVD digipack, a numbered box set including a signed thank-you card and poster, and a Blu-ray edition that also has a signed thank-you card and poster.
Gig goers will receive an exclusive mp3 download of the remix of Play Sumthing Fast.
This is an audio programme available on CD or MP3 download. There is around three hours of material in the form of recorded versions of author Brian Griffin's sales seminars.
Or you could shell out EUR16.95 for the standard edition CD or even just EUR9.95 for the 128 kbps mp3 download.
Customers who preordered the album were eligible to receive a free MP3 download of the new radio-released single, "How Long," with the purchase.
To combat this aggressive assault, Rabbi Tovia Singer, founder of Outreach Judaism, is now making available his 20-part tape series, "Let's get Biblical" free via mp3 download to anyone seeking answers to questions posed by Christian missionaries.
For example, if you have an XCP CD, you can exchange it for a replacement CD, an MP3 download of the same album, or either a cash payment of $7.50 and one free album download or three free album downloads.
'Real-world' tests demonstrated the suitability of mobile wireless broadband for services such as MP3 download, live TV and High Definition video on demand by placing a laptop in a moving vehicle.
A few irresistible jokes are OK but, for the most part, stick to cool stuff like a link to the sneak-peek trailer of that movie he's dying to see or a free MP3 download from his favorite new band.
On the website subscribers will receive a free MP3 download “The Eight Biggest Mistakes Women Make that Blocks their Flow of Fabulosity" valued at $14.99 and as a bonus, subscribers receive the Fabulous I Am News valued at $69 annually for free.
Fear is available as a free high quality MP3 download via the facebook site: www.facebook.com/3footninjamusic Until next week, see you on the beat.