1. CD
UVI
Tape
Mini disc
Hard disc
A CD (compactdisc) isa digital discusedtostore data. It wasdevelopedtostore and
developplaybacksoundrecording.
Justlike the CD a DVD isan optical storage format.DVD’sofferhigherstorage capacity
than compact discswhile havingthe same dimensions
A cassette (MC) isa magnetictape recordingformatforaudiorecordingandplayback.Compactcassette’s
come in twoforms,eitheralreadycontainingcontentaspre-recordedcassette,orasfullyrecordable ‘blank’
cassette.
The mini discis an obsolete magnetooptical discbaseddatastorage device forseventyfour
minutesandlatereightyminutes,of digitizedaudioor1 gb of HI – MD data.
A hard diskdrive (HDD) isa data storage device usedforstoringandretrievingdigital informationusing
rapidlyrotatingdiscscoatedwithmagneticmaterial.DataisreadI a random accessmanner,meaning
individualblocksof datacan be storedor retrievedinanyorderratherthan sequentially.

2. Cable
Signal flow
Directinjection
Multi track
A cable ismost oftentwoor more wiresrunningside byside andbonded,twistedorbraided
togethertoform a single assembly,butcanalsoreferto a heavystrongrope.In electrical
engineeringcablesare usedtocarry electriccurrents.
Audi signal flowisthe pathan audiosignal takesfromsource to output,includingall the
processinginvolvedingeneratingaudible soundfromelectronicimpulsesorrecordedmedia.
A DI unitalsoknownas a directinjectionorinputisa device typicallyusedinrecordingstudiostoconnect
a high– impedance,line level,unbalancedoutputsignaltoa low- impedancemicrophone levelbalanced
input,usuallyXLRconnector.
Multitrackrecordingisa methodof soundrecordingthat allowsforthe spate recordingof
multiple soundsourcestocreate acohesive whole.