X4-TECH CLIPSTAR Instruction Manual page 9

› FM turner, stores up to 20 stations
› FM recording, record FM programs
› No driver necessary under Windows 2000/XP/Vista
› Mobile storage function
› High quality voice recording
› Double earphones
› Supports mini SD cards
› Several EQ modes
› ID3 TAG support (title, artist, and lyrics - edited in advance)
› Firmware upgradeable
› Built-in rechargeable Lithium-ion battery
› USB 2.0
MP and WMA music format information
Music, that we listen to either from a stereo system, kitchen
or car radio, is just actually an analog signal.
In the past one could buy records, music cassettes and ta-
pes with a recorded analog signal. While records were usu-
ally damaged from dust and frequent use, tapes demagne-
1
Chapter 3 General information
tized themselves leading to a dull and muffled sound.
Later on, the Compact Disc was developed for storing mu-
sic in digital form. An analog signal is measured at specific
intervals, transferred in numerical value and stored in a
specific form on the CD. A CD player (or amplifier) evaluates
the computed value once again into an analog signal.
Most people do not even notice the difference between
music coming from an analog source (record, tape) or from
that of a CD.
An audio CD can hold approximately 70 – 80 minutes of
music. Its format is similar to that of a normal computer
CD-ROM, which has an equivalent data volume of approx.
650 – 700 MB.
The early stages of computer technology development,
where 1 MB user memory, 100 MB hard drives and a 28 kBit
modem, a standard thing were, meant also that it usually
brought a lot of problems along with it.
That's why researchers started experimenting with new
ways of compressing an audio CDs amount of data.
Chapter 3 General information
1