Mobile is a term for small, mobile, hand-held devices that can be carried with you and used for voice communication, and most often web browsing on the internet. Mobile devices are usually "smartphone" (a term used to describe devices that can make and take phone calls, send and receive messages, browse the Internet, as well as other functions).
An MP3 player is a portable media player, also known as a portable media player, and sometimes as a Walkman, a portable audio player, or a jogger. An MP3 player can be used to listen to music stored on a computer or other device, or on an MP3-compressed CD. In addition to music, it can also play video and other types of media. Typically, the MP3 player acts as a peripheral, though some models contain a small hard drive or other storage technology and can become their own storage media.
The term MP3 can refer to either the MP3 Audio Format, a standard developed by the Moving Picture Experts Group (MPEG), or to the MP3 .mp3 file format, a file format for storing audio data. MP3 is also referred to as MPEG-1 Audio Layer 3 or simply MPEG-3.
MPEG-3 Audio is a standard for audio encoding and it is similar to the MPEG-1 Audio Layer-3. The file format is generally compatible with the.mp3 format, and it can be used with some music players to allow for transfer between the player and the Internet.
In the early 1990s, MP3 Audio was developed by the ISO MPEG audio standardisation committee. In April 1992, a "plug-in" component called a MP3 encoder was commercially released by Inside Secure. By this time, it was clear that software encoders would do a better job than hardware encoders and that the first decoders would be commercial, not necessarily open-source.
The first MP3 players and Audio CD players were released around 1996. In July 1995, the audio CD standard was created by the CD-ROM XA group, a part of the International Organization for Standardization (ISO). The MPEG-1 Audio layer 3 (MP3) audio coding standard was announced by the Moving Picture Experts Group (MPEG) and was published as ISO/IEC 11172:1996. The coding standard was initially used for CD-ROMs, but the MP3 coding standard gained popularity.