MP3 is a file
format standard for stored digital audio files. MP3 files are stored digitally in such a way that, despite a
relatively small file size, the sound quality is excellent.
Compared to traditional formats, MP3's have a compression ratio of
12:1. However, because of this intense compression, to listen
to an MP3 on a computer generally requires a Pentium class personal computer processor and at least
32 MB
of system memory.
You can identify MP3 files on a
Personal Computer by the "mp3"
file extension. They are automatically recognized by the Windows 98
and up (Win 2000, Win XP) operating system. The compression ratio and high sound quality
of a MP3 make it ideal for the Internet medium. On the
Internet, millions of people download and trade MP3's of their
favorite artist's songs and albums everyday.
History of MP3
MP3
is the shortened name for MPEG-1 Layer III
(or MPEG Audio Layer III) and is an audio subset of the
MPEG industry standard developed by ISO (Industry Standards
Organization) and became an official standard in 1992 as part of
the MPEG-1 standard.
Fraunhofer Gesellschaft (FhG), a German company, was the company originally
involved in MP3
development and holds key patents regarding the technology.
MPEG-1 Layer III
is an audio
only compression component and is a direct descendant from
MPEG-1 which is low-bandwidth video compression, the
type that is used over the internet and MPEG-2 which is a high-bandwidth
audio and video compression which is the standard for DVD technology.
Is MP3 legal?
Yes,
MP3 is simply a file format and is very legal. The act of
selling, trading and listening to MP3's falls under normal U.S.
copyright law. It is legal to trade a MP3 file if the song's
copyright holder has granted permission to download and play the
song. For example, all MP3.com artists have agreed to
distribute their music to visitors of the website. It is
illegal to sell, trade or listen to MP3's if the artist hasn't given
express, written permission to do so.
Truly legal MP3's are rare and often the
songs are from lesser known artists. Because of these
difficulties, most MP3 trading on the Internet is technically
"illegal". Reality dictates that downloading and playing MP3's
is not a serious offense that warrants any sort of prosecution or
investigation. In many ways, MP3 trading is likened to the
copying of movies or television programs. Many search engines
and software utilities have been forged to help MP3 users trade song
files. These search engines and utilities are often backed by
large companies, who don't seem to be afraid of the medium's
controversial nature.
In general, if you simply listen to
songs for personal use, there is no real problem. If you start
using MP3 to make bootleg CD's, or begin selling them in bulk, you
will start to find trouble.
How do I listen to
MP3's?
There are many different ways of listening to
MP3's. In fact, the process can be as simple or as
sophisticated as the user desires.
In the most simple case, no special
software is needed to play or download MP3's. Any web browser
is able to download a MP3 file and the Windows Media Player, which
comes as part of the Windows operating system on Windows PCs, is capable of playing
them. However, most MP3 users do not find these basic tools
adequate.
Most MP3 users prefer a customized MP3
player program such as WinAMP and download utilities such as GoZilla,
Getright or the new Napster. These programs make the
experience of listening to your MP3's a little more pleasant and
prevent headaches often associated with sorting and playing more
than one MP3 file on your computer.
MP3 Players
In general, MP3 players are practically
identical to other multimedia players such as the Real Audio player
or Apple's QuickTime. Files can be played by either double
clicking on files themselves or by launching the player and
selecting a given song as if it were a word processing document or
any other file on your computer.
Portable MP3 Players
Alternatively, you can take your MP3
files with you, just about anywhere. Portable MP3 players are
now more popular than ever. You can buy these digital players at most major
electronic stores and countless places online. To learn more
about these players, read Portable MP3 Players or see a detailed example of one here.
The Apple iPod is one of
the most popular players.
How do I find
MP3's?
MP3's can be found all over the web. As
mentioned above, MP3's can always be found at large MP3 portal sites
such as MP3.com or MP3now.com. However, such sites offer a
relatively small selection and only account for music that has been
deemed "legal".
Several search engines have been
developed specifically for MP3's. Lycos MP3 Search, Scour and
Palavista are a few of these useful search engines.
Additionally, software utilities like Napster allow MP3 users to
search for, and trade, MP3's through a client - not unlike AOL's
Instant Messenger. As the MP3 phenomenon grows, more efficient
searching and downloading tools will be available for MP3
users.
For a list of the best MP3 sites on the
Internet visit MP3 sites section.
How do I make my own
MP3's?
In some sense, it is impossible to "make"
MP3's. Unlike MIDI files, which are lists of instructions
given to computer based instruments, the MP3 format is not a tool
for the creation of music. In other words, a musician cannot
create music in MP3 form. However, existing formats can be
converted to the MP3 format for better compression without a
reduction in sound quality.
Music files are quite bulky and CD
tracks, in their original form, are far to large to be transported
over the Internet. The process of converting a CD track to a
MP3 is relatively simple and can be accomplished with many software
packages such as Audio Catalyst, MusicMatch Jukebox and
others. These programs come in quite handy, as an entire CD
can be stored on a hard drive at a fraction of the space or on a Zip
disk.
What
is a portable MP3 Player?
MP3
players are the hottest gadgets on the market and for good reason:
they allow you to hear all that great music that's available on the
Web and take it with you everywhere you go. Weighing in at only a
few ounces, these battery-powered devices are simple to use. Most
portable MP3 players come bundled with software including a ripper
that allows you to convert songs from your CD collection into MP3
files on your computer's hard drive and a file manager that lets you
organize, store and transfer MP3s from your PC onto the portable player.
First, just download some MP3 files from the Web (free sites or from
an online store) to your computer or rip some tracks
off a CD. Once you're finished, using the portable player's supplied
software program (usually on the supplied CD) to manage your music
files, transfer the files onto your
portable MP3 player via your PC's USB port. (You would connect the
portable player to your computer by way of the supplied USB cable) Detach the
cable, and you're ready to hit the road. (You may need some time to
get familiar with the navigation and operation of your players music
manager software.)
Portable MP3
players are just a fraction of the size and weight of a personal CD
player, and since the music files are stored in solid-state flash
memory, your music won't skip. And for music lovers, MP3 is a dream
come true. Tracks by thousands upon thousands of artists, from the
established to the obscure, are available for download on the
Internet. Some outlets charge a small fee for downloads, but a lot
of independent music is available for free.
Wal-Mart stores have
joined the online market, offering music downloads for 88 cents per
song and using the Microsoft WMA format. Apple has their own online
music store called iTunes for downloads to your Apple iPod player. You can store, organize
and listen to music right from your computer and download it easily
to a player that you can take on the road, which means you may never
have to go to a record store again. And with the music industry
increasingly looking to the Internet as a venue for commercial music
distribution, now's the ideal time to get ahead of the game and
start growing your MP3 music collection.
Beware of current
incompatibilities as the market wars continue to determine what
formats and copy protection schemes will eventually win out. As in
the past, Microsoft and Apple have different approaches, meaning you
need to do your research to determine your final music playing
solutions. Some players may not be able to decode all formats.
Consider
these important Portable MP3 player features:
• |
Interface:
Portable MP3 players generally interface with a computer in
one of three ways: parallel, serial and USB. Parallel and
serial interfaces are standard ways to connect an MP3 player
to a computer. USB (Universal Serial Bus) transports
information from your computer to your MP3 player through
one of the fastest cable connections available today. |
• |
Internal
Memory: The amount of internal memory (also
called onboard memory) that comes standard on the player
varies, but the average is 64 or 128 or 256MB. Most players have
additional memory slots so removable memory cards can be
added. So, how much memory is enough? 32 MB will store
approximately six songs, so in general, the more memory that
comes standard, the better. |
• |
Expandable
Memory: Most players allow you to add extra
memory and have maximum capacities of 32 MB, 64 MB and over
128 MB. |
Portable mp3 Player: Storage Size Matters
A little background on mp3 player
technology may help you figure out what you need - MP3 players have
four components, a decoder chip, a storage system, a display, and a
control system. The decoder chip and control systems are all made
from very compact parts that are very cheap to make - only a few
dollars. So it is the storage system that represents the bulk of the
cost, and determines the size of the player and its main features.
Let's look at the different storage
technologies used in mp3 players:
Storage Media |
Approx. Number of
Songs |
Size |
Approx. Cost |
Example |
Integrated Flash |
24 to 36 |
key ring -
matchbox |
$30-150 |
RCA
Kazoo |
Flash Module |
24 to 36 |
matchbox-shirt
pocket |
$80-200 |
Nomad
IIc |
CD, mini CD |
200 per CD |
portable CD
player |
$100-200 |
Iriver
Slimx |
Disk drive |
5,000 to
15,000 |
shirt pocket -
CD player |
$200-$500 |
Nomad
Jukebox, Zen,
Apple iPod |
If you buy a player that stores
about a dozen songs, the display size and features are not very
important. If you opt for a player that can store thousands of songs,
the display size becomes very important as you will spend more time
navigating to find the song you want. Although other companies are catching up, Apple's iPod is the clear winner in the display
size, quality and navigational areas. The iPod is not just for the
Macintosh. It works well with Windows computers too.
Convenience of mp3 Players
From the table you can easily see
that the disk drive or "jukebox" players are the most
convenient for quick access to many songs. With blank CD's being so
cheap the MP3 CD players offer the cheapest access to many tracks
but at some inconvenience: you have to burn, carry around and change
the CD's.
mp3 Player Reliability
The most reliable players are the
ones with Flash storage because they use no moving parts for storage
that could wear out. If you already use flash cards, in a digital
camera for example, you might consider picking a player that uses
the same kind of card. USB flash card readers are readily
available for all 6 formats of flash card so it is easy to put your
songs on the cards from any modern PC.
mp3 Player Software and
Connectivity
Another important factor to
consider is which kind of computer you have and whether the software
bundled with the player will work well on your system. All the
players work with Windows PC's and most use the USB 1.1 connection.
The recent jukebox players use the new faster, USB 2.0.
Players from
Apple and Creative Labs have Firewire (IEEE1394) connections. If you
plan to update your player regularly with many mp3's you should
definitely choose a USB2.0 or Firewire connected player. Creative
Labs Nomad
and Apple's iPod
work well for Macintosh users, but don't forget that the iPod
is available for Windows users to.
Unfortunately the Nomad Zen does not
come with Apple Macintosh support.
Audio Formats
All the players do a good job on
mp3 format files. Microsoft has another audio format, WMA which is
more space efficient and quite popular but not all the players
support it. Apple's proprietary format used in their popular music
download store works well on the iPod but is not available on other
players yet.
General Recommendations
If you are just exploring the world
of mp3 players or buying for a young person, you should probably go
for one of the cheaper Flash memory players such as the Nomad
IIc.
If you want the state of the art
with no compromise on capacity or convenience go for a jukebox like
the new Creative Labs Zen
or the Apple iPod.
If you are already weighed down
with portable gadgets consider a device that integrates mp3 player
and other functionality like the Fuji
Finepix digital camera or the ultra-slim Casio
Exilim digital camera and mp3 player. New and already very
popular devices from IRiver include an FM tuner and the ability to
do voice recording, direct recording from the radio and high quality
recording from an external source.
Musicians will find the special
speed change feature of the Nomad Jukebox and Zen products very
useful for learning musical phrases. These players can slow down the
audio as much as 50% without changing the pitch of the recording.
Where to find mp3 Downloads and
mp3 Files
All the players come with software
to "rip" audio tracks from your CD's and put them into mp3
form. One of the best download sources you can try for free is EMusic.
They
have a large source of big name artists and it is very easy to
download whole albums.