Technical Jargon That Is Used - Glossary
With all the jargon that comes with MP3 Player technology, it’s good to know what it all means. I will write some of the most common technical jargon that you meet during the read.
MP3 - is an acronym for MPEG-1 or MPEG-2 audio layer 3. MP3 is the file extension for MPEGaudio layer 3. Layer 3 is one of three coding schemes (layer 1, layer 2 and layer 3) for the compression of audio signals. Layer 3 uses perceptual audio coding and psychoacoustic compression to remove all superfluous information (more specifically, the redundant and irrelevant parts of a sound signal. The stuff the human ear doesn’t hear anyway). It also adds a MDCT (Modified Discrete Cosine Transform) that implements a filter bank, increasing the frequency resolution 18 times higher than that of layer 2.
WMA - It supposedly sounds just as good as an MP3 file, but is half the file size. The acronym stands for Windows Media Audio. It is an audio file encoded for use with Windows Media Player.
USB - Some MP3 Players are recharged by your USB port. The acronym stands for Universal Serial Bus a protocol for transferring data to and from digital devices
Jukebox - Has a large Hard Disk, usually up to around 80GB. It is a automated device that holds a number of removable optical and magnetic disks for flexible storage requirements.
FM Radio - is a broadcast technology invented by Edwin Howard Armstrong that uses frequency modulation to provide high-fidelity sound over broadcast radio. FM radio is distributed primarily through broadcast reception of FM radio signals. Only some MP3 players come with this option. It is basically a normal FM radio combined with your player.
LCD - Liquid Crystal Display. Used on the vast majority of MP3 Players. A display that consists of two polarizing transparent panels and a liquid crystal surface sandwiched in between. Voltage is applied to certain areas, causing the crystal to turn dark. A light source behind the panel transmits through transparent crystals and is mostly blocked by dark crystals.
WAV - An audio file format, developed by Microsoft and IBM. The conversion process from an analogue signal to a digital file can be done over several levels - 8-bit or 16-bit depth and 11, 22 or 44.1kHz sampling rate. The highest quality of 16-bit 44.1kHz would mean that a 3 minute song would take up 15MB of space, since the format has no native compression.
Flash Memory - stores permanent information on some palm-sized computers. Unlike RAM (random-access memory), flash memory can continue to store information in the absence of a power source. Palm devices often make use of flash memory to store the operating system and core applications. Unlike ROM (read-only memory), you can write to flash memory, making it possible to update the operating system and applications via software. Flash memory is more expensive than ROM
Hard Drive Storage - The name says it all, it is a hard drive where you can store your data, mp3 songs, movies etc.
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