Methodstoftaudiotrecordingt-ttCORRECTtANSWERSAnalogtandtdigital
Microphonet-
ttCORRECTtANSWERSConvertstacousticaltenergytthattistsoundtintotelectricaltsignaltthattcantbetdeliv
eredttoteithertantanalogtortdigitaltdevice
Pathtoftdigitaltaudiot-
ttCORRECTtANSWERSTotchangetthetanalogtsignalttotatdigitaltsignaltittwilltneedttotpasstthroughtantan
alogttotdigital
convertert(digitaltmixertortA/Dtconverter)
Sampletratet-
ttCORRECTtANSWERSNumbertoftsamplesttakenteachtsecondtwhentrecordingtsound.t(44.1tkHz,t48tk
Hz,tettcetera)
Bittratet-
ttCORRECTtANSWERSthetnumbertoftbitsttransferredtortreceivedtpertunittofttimet(usuallyt16tort24tbit
s)
Lowtsamplingtratet-ttCORRECTtANSWERSApproximation
Hightsamplingtratet-ttCORRECTtANSWERSSmooth
, DigitaltmixertortA/Dtconvertert-
ttCORRECTtANSWERSThetdigitaltmixer,tortA/Dtconverter,twilltoutputtthetsignaltthroughtonetoftatvari
etytoftconnectionstsuchtastUSB,tFireWiret(IEEEt1394),tserial,tlocaltcomputertbus,tortEthernet.
DynamictMicrophonet-ttCORRECTtANSWERS(Movingtcoil)t-
tmadetuptoftdiaphragm,tatcoil,tandtatmagnet.tAstacousticaltenergythitstagainsttthetdiaphragm,twhic
htistatflattplatetattthetfronttoftthetmicrophone,tittcausestthetcoiltthattistattachedttotitttotmovetbackta
ndtforthtovertthettoptoftthetmagnet.tThetmovementtoftthetcoiltoverttoptoftthetmagnettcreatestantel
ectricaltsignaltwhichttravelstthroughtthetwirestwithintthetmicrophonetandteventuallytreachestyourt
digitaltmixertortA/Dtconverter.
CondensertMicrophonet-
ttCORRECTtANSWERSConsiststoftatfronttplatet(diaphragm),tbacktplate,tandtat48-
volttpowertsource.tThetfronttandtbacktplatettogethertcreatetatcapacitor.tWhentacousticaltenergythit
stthetfronttplatetoftthetcapacitor,tthetdistancetbetweentthetfronttandtbacktplatetchanges.tThetgaptb
etweentthesettwotplatestistelectricallytcharged.tThistchargetistcreatedtbyteithertantinternaltbatteryts
ourcetortantexternaltpowertsourcetreferredttotastphantomtpower.
Shouldtyoutusetmicrophonestwithtbatteries?t-
ttCORRECTtANSWERSNo.tIftatbatterytwouldtdietduringtuse,tyoutcouldthavetatgaptintyourtrecording,ta
ndtyoutwouldtneedttotinterruptttheteventtyoutaretreportingttotfixtthistproblem.
DigitaltmixerstandtA/Dtconverterstacttast-
ttCORRECTtANSWERSPhantomtpowertsourcetfortcondensertmicrophones
Biggesttdifferencetbetweentdynamictandtcondensertmicrophonest-
ttCORRECTtANSWERSThetwaytbytwhichtacousticaltenergytisttransformedtintotelectricaltenergy,tonet
assistedtbytantelectricaltsourcetandtthetothertbytatmagnet.tBothtaretcapabletoftfacilitatingtatqualityt
audiotrecordingtandtaretrecommendedtfortusetintthetfieldtoftdigitaltreporting.
Pickuptpatternt-ttCORRECTtANSWERSSettpathtintwhichtatmicrophonetwilltintercepttsound
Microphonet-
ttCORRECTtANSWERSConvertstacousticaltenergytthattistsoundtintotelectricaltsignaltthattcantbetdeliv
eredttoteithertantanalogtortdigitaltdevice
Pathtoftdigitaltaudiot-
ttCORRECTtANSWERSTotchangetthetanalogtsignalttotatdigitaltsignaltittwilltneedttotpasstthroughtantan
alogttotdigital
convertert(digitaltmixertortA/Dtconverter)
Sampletratet-
ttCORRECTtANSWERSNumbertoftsamplesttakenteachtsecondtwhentrecordingtsound.t(44.1tkHz,t48tk
Hz,tettcetera)
Bittratet-
ttCORRECTtANSWERSthetnumbertoftbitsttransferredtortreceivedtpertunittofttimet(usuallyt16tort24tbit
s)
Lowtsamplingtratet-ttCORRECTtANSWERSApproximation
Hightsamplingtratet-ttCORRECTtANSWERSSmooth
, DigitaltmixertortA/Dtconvertert-
ttCORRECTtANSWERSThetdigitaltmixer,tortA/Dtconverter,twilltoutputtthetsignaltthroughtonetoftatvari
etytoftconnectionstsuchtastUSB,tFireWiret(IEEEt1394),tserial,tlocaltcomputertbus,tortEthernet.
DynamictMicrophonet-ttCORRECTtANSWERS(Movingtcoil)t-
tmadetuptoftdiaphragm,tatcoil,tandtatmagnet.tAstacousticaltenergythitstagainsttthetdiaphragm,twhic
htistatflattplatetattthetfronttoftthetmicrophone,tittcausestthetcoiltthattistattachedttotitttotmovetbackta
ndtforthtovertthettoptoftthetmagnet.tThetmovementtoftthetcoiltoverttoptoftthetmagnettcreatestantel
ectricaltsignaltwhichttravelstthroughtthetwirestwithintthetmicrophonetandteventuallytreachestyourt
digitaltmixertortA/Dtconverter.
CondensertMicrophonet-
ttCORRECTtANSWERSConsiststoftatfronttplatet(diaphragm),tbacktplate,tandtat48-
volttpowertsource.tThetfronttandtbacktplatettogethertcreatetatcapacitor.tWhentacousticaltenergythit
stthetfronttplatetoftthetcapacitor,tthetdistancetbetweentthetfronttandtbacktplatetchanges.tThetgaptb
etweentthesettwotplatestistelectricallytcharged.tThistchargetistcreatedtbyteithertantinternaltbatteryts
ourcetortantexternaltpowertsourcetreferredttotastphantomtpower.
Shouldtyoutusetmicrophonestwithtbatteries?t-
ttCORRECTtANSWERSNo.tIftatbatterytwouldtdietduringtuse,tyoutcouldthavetatgaptintyourtrecording,ta
ndtyoutwouldtneedttotinterruptttheteventtyoutaretreportingttotfixtthistproblem.
DigitaltmixerstandtA/Dtconverterstacttast-
ttCORRECTtANSWERSPhantomtpowertsourcetfortcondensertmicrophones
Biggesttdifferencetbetweentdynamictandtcondensertmicrophonest-
ttCORRECTtANSWERSThetwaytbytwhichtacousticaltenergytisttransformedtintotelectricaltenergy,tonet
assistedtbytantelectricaltsourcetandtthetothertbytatmagnet.tBothtaretcapabletoftfacilitatingtatqualityt
audiotrecordingtandtaretrecommendedtfortusetintthetfieldtoftdigitaltreporting.
Pickuptpatternt-ttCORRECTtANSWERSSettpathtintwhichtatmicrophonetwilltintercepttsound
