X4-TECH CLIPSTAR Instruction Manual - page 9
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›FMturner,storesupto20stations
›FMrecording,recordFMprograms
›NodrivernecessaryunderWindows2000/XP/Vista
›Mobilestoragefunction
›Highqualityvoicerecording
›Doubleearphones
›SupportsminiSDcards
›SeveralEQmodes
›ID3TAGsupport(title,artist,andlyrics-editedinadvance)
›Firmwareupgradeable
›Built-inrechargeableLithium-ionbattery
›USB2.0
MP and WMA music format information
Music,thatwelistentoeitherfromastereosystem,kitchen
orcarradio,isjustactuallyananalogsignal.
Inthepastonecouldbuyrecords,musiccassettesandta-
peswitharecordedanalogsignal.Whilerecordswereusu-
allydamagedfromdustandfrequentuse,tapesdemagne-
Chapter3
Generalinformation
Chapter3
Generalinformation
tizedthemselvesleadingtoadullandmuffledsound.
Lateron,theCompactDiscwasdevelopedforstoringmu-
sicindigitalform.Ananalogsignalismeasuredatspecific
intervals, transferred in numerical value and stored in a
specificformontheCD.ACDplayer(oramplifier)evaluates
thecomputedvalueonceagainintoananalogsignal.
Most people do not even notice the difference between
musiccomingfromananalogsource(record,tape)orfrom
thatofaCD.
AnaudioCDcanholdapproximately70–80minutesof
music. Its format is similar to that of a normal computer
CD-ROM,whichhasanequivalentdatavolumeofapprox.
650–700MB.
The early stages of computer technology development,
where1MBusermemory,100MBharddrivesanda28kBit
modem,astandardthingwere,meantalsothatitusually
broughtalotofproblemsalongwithit.
That’s why researchers started experimenting with new
waysofcompressinganaudioCDsamountofdata.