Once you have downloaded your MP3 files into your MP3 player, you can listen to your music while you jog, on long trips, shopping or anywhere. Most portable MP3 players are small (3 in x 5 in / 7.5 cm x 11.5 cm or the new Sanyo SSP-PD7 is 39x84x25mm), lightweight and solid-state. MP3 players have solid-state memory, which means there are no moving parts to break or skip the music. MP3 players come equipped with various types of headphones or earpieces.
Parts of a Player; · Data Ports · Memory · Microprocessor · Digital Signal Processor (DSP) · Display · Playback Controls · Audio Port · Amplifier · Power Supply
The MP3 player plugs into your computers USB or parallel ports to transfer the music in the player. Players with the USB transfer capability are many times faster then those of parallel transfer. The MP3 files are saved in the player’s memory.
Memory Types: · Internal Flash Memory · CompactFlash cards · SmartMedia cards · Memory Stick · Internal microdrive · Iomega Clik! Removable media
The microprocessor is the brain of the player. It is the controller of the MP3 player, like the microprocessor of a PC. The microprocessor monitors the playback the users inputs, displays the information about the current song on the LCD (Liquid Crystal Display) panel and sends directions to the DSP chip that tells it exactly how to process the audio.
The song data are pulled down from memory by the DSP, applied any special effects, or EQ and streams it to the amplifier. Decompression algorithm that uncodes the compressed MP3 file and then a Digital-to-analog converter turns the bytes back into waves is run by the DSP.
The strength of the signal is boosted by the amplifier and sent to the audio port, where pair of headphones are connected.
Mp3 players are battery operated, most use one or two AA batteries and last for 10 to 12 hours on a single charge. MP3 players also have AC adapters so they can be plugged into a normal electrical outlet and some players come with DC adapters for use in a car.
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