Home > MP3 player

Since the MP3 format is widely used, almost all players can play that format. In addition, there are many other digital audio formats. Some formats are proprietary, such as MP3, Windows Media Audio (WMA), and Advanced Audio Codec (AAC). Some of these formats also may incorporate digital rights management (DRM), such as WMA DRM, which are often part of paid download sites. Other formats are patent-free or otherwise open, such as Vorbis, FLAC, and Speex (all part of the Ogg open multimedia project).

The first MP3 Player created was the Rio PMP300 by Diamond Multimedia , which earned the company and the device the wrath of the major record labels in 1998, but Diamond won a legal victory on the shoulders of Sony Corp. v. Universal City Studios, and MP3 players were ruled legal devices; Diamond and the Rio went on to establish a new segment in the portable audio player market.

There are several types of MP3 Players:

• Devices that play CDs. Often, they can be used to play both audio CDs and homemade data CDs containing MP3 or other digital audio files.
• Pocket devices. These are solid state devices that hold digital audio files on internal or external media, such as memory cards. These are generally low-storage devices, typically ranging from 128MB-512MB, which can often be extended with additional memory. As they are solid state and do not have moving parts, they can be very resilient. Such players are generally integrated into USB keydrives.
• Devices that read digital audio files from a hard drive. These players have higher capacities, ranging from 1.5GB to 60gb, depending on the hard drive technology. At typical encoding rates, this means that thousands of songs — perhaps an entire music collection — can be stored in one MP3 player. Apple's popular iPodDutch is used. The iPod is a portable audio player designed and marketed by Apple Computer. It stores music on a built-in hard drive, which gives it much larger capacity than other portable audio players that rely on flash memory. This also lets it serve player is the best-known example.

1 Equipment

Generally speaking, MP3 players are portable, employing internal or replaceable batteries and headphones, although people are increasingly hooking players up to their carA car radio is a radio used in a car o automotive. Generally car multimedia equipments includes CD/ DVD player/recorder. Modern ones include also USB ports (to read the memory of portable MP3 players). Now there is a more close integration with GPS (using and home stereos — sometimes via a wirelessWireless is an old-fashioned term for a radio receiver, referring to its use as a wireless telegraph. The term was widely used in the UK, long after radio was being used for other signals, such as music. In modern usage, the term refers to communication w connection — thereby turning them into portable jukeboxes. Some MP3 players also include FM radio tunerA tuner is an adjustable device which passes one radio frequency, or band of frequencies, and excludes others, by using electrical resonance. The simplest tuner consists of an inductor and capacitor. Combined with a detector, also known as a demodulator,s .

Many MP3 players can encode directly to MP3 or other digital audio format directly from a line in audio signal (radio, voice...)

Devices such as CD players can be connected to the MP3 player (using the USB port) in order to directly play music from the memory of the player without the use of a computer.